用得着的五个功能强大的(论文写作以及专业英语)翻译网站
1）句库
网址：https://www.docsj.com/doc/704220890.html,/
翻译的非常好，基本上都能找到自己所需的，同时也可以发音，这有利于提高自己的专业英语听力！
举例：
翻译first principles
https://www.docsj.com/doc/704220890.html,/search.php?q=first+principles
在第4个清楚的给出了”第一原理“的解释！
2）词博
网址：https://www.docsj.com/doc/704220890.html,/
翻译的很杂，可以供多种选择；而且可以发音，这一点感觉很好！举例：
翻译first principles
https://www.docsj.com/doc/704220890.html,/search.php?dictkeyword=first+principles
没有找到确切的”第一原理“的翻译，但是其他词汇的翻译还好！3）句译
网址：https://www.docsj.com/doc/704220890.html,/viewPage.php
翻译的很好，基本你都可以在他的翻译中找到合适的！
举例：
翻译first principles
https://www.docsj.com/doc/704220890.html,/viewPage.php（这个要自己输入firt principle) 翻译结果非常好！它给出10个例句，结果又8个符合我们的要
求，而且给出的例句非常有用，完全是文献里摘出来的！！！
我特意放在下面：
1. 第一过渡金属酞菁分子的电子结构的第一性原理计算
A first-principles study on the electronic structure of the first transition metal phthalocyanines
2. 首要原则
First Principles
3. 首要教学原理
First principles of Instruction
4. NiTi合金的第一性原理研究
A first principles investigation on NiTi alloy
5. KTa_(0.5)Nb_(0.5)O_3电子结构的第一性原理研究
First Principles on KTa_0.5Nb_0.50
6. NiTi合金的第一原理研究
First-Principles Investigation of NiTi Alloy
7. In-N共掺杂ZnO第一性原理计算
First principles study of In-N codoped ZnO
8. 碳纳米管的第一性原理研究
First-Principles Study of Carbon Nanotubes
9. Cu掺杂ZnS的第一性原理计算
First-principles Calculation of Cu-doped ZnS
10. 分子电子器件第一性原理设计
First Principles Design of Molecular Electric Devices
4)词都
https://www.docsj.com/doc/704220890.html,/
查词也还算不错，并且给出很多来自文献的例句，非常不错！举例：
翻译first principles
给出了“第一原理”的翻译，而且给出了很多直接来自文献的例句，有些都是长句。并且给出一些参考词头，进行词语联系，这个特点非常有用！
https://www.docsj.com/doc/704220890.html,/dictall/r ... rd=first+principles
比如：
1) first principles
第一性原理
1.
Band structure of strained Si/(111)Si_(1-x)Ge_x:a first principles investigation;
第一性原理研究应变Si/(111)Si_(1-x)Ge_x能带结构
2.
This paper investigates the diffusion of carbon atoms in austenite cell with and without adding the rare earth lanthanum by CASTEP code based on first principles quantum mechanics theory.
基于第一性原理研究了C原子在有无稀土La的奥氏体晶胞中扩
散。
3.
The electronic structure of Cu_Au_(n+m=4) crystalloid clusters were calculated using density functional theory method of the first principles.
用基于第一性原理的密度泛函理论计算分析了CunAum(n+m=4)类晶结构团簇的电子结构性质。当然，还有其他的。但是，这些是个人最常用的！
我打开我的IE收藏夹，还发现自己曾经收藏了一个叫“词都”的网站，也非常不错，
因此补充上来.增加一个：
5）英库：
网址：https://www.docsj.com/doc/704220890.html,/
比如，我查了first-principles,给出了很好的一些结果，
查“molecular electronics”，都给出了很好的结果
The long road to molecular electronics could be paved with DNA,下载MP3
DNA可能会缩短分子电子学的漫长之路,
https://www.docsj.com/doc/704220890.html,/?action-forumdisplay-fid-55.html
New technique may speed development of molecular electronics下载MP3
纳米新技术有望加速分子电子学的发展
https://www.docsj.com/doc/704220890.html,/?2/spacelist-bbs.html
Molecular Electronics and Molecular Electronic Devices下载MP3 分子电子学与分子电子器件
https://www.docsj.com/doc/704220890.html,/Search/Se ... C%E5%BB%BA%E5%A3%AE General Physics and Molecular Electronics下载MP3
普通物理学及分子电子学
https://www.docsj.com/doc/704220890.html,/read.php?tid-41524.html
Molecular Electronics and System Design下载MP3
分子电子和系统设计
https://www.docsj.com/doc/704220890.html,/bbs/simple/index.php?t28177.html Molecular Electronics and Biocomputing Information Network下载MP3
分子电子学与生物计算虚拟信息网
http://159.226.63.146/SPT--FullRecord.php?ResourceId=3908 Progresses in Organic Field Effect Transistors and Molecular Electronics下载MP3
有机场效应晶体管和分子电子学研究进展
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
我本人的切身体会是，这样的网站对咱们有两个方面的用处：第一方面：就是你看到一些不懂得专业词汇，但是普通英语词典又查不到的词汇，可以通过他们进行翻译，就是英译汉；
根据专业英语词汇找汉语翻译我觉得这两个不错：
1）第1个，翻译也很准确，同时可以发音，这样不但查词，而且易于提高自己的听力；
2）第4个，翻译很好，给出直接来自文献的例句最多，同时有联想词条。
当然，第3个也不错，他可以给出一些直接来自文献的例句
第二方面：就是我们在写文章的时候，自己想说一些东西，但是发现自己写到论文里总是让人觉得不是地道的英语，即要根据汉语来找合适的英语表达，就是汗译英；在这方面，如果根据自己的汉语表达来找合适的英语表述，我觉得还是句库和句译
比如，就”最能说明问题的“这句汉语，找合适的英语表达方式，我就发现句库和句译比其他都强！
自动化专业英语课文重点句子翻译(精)
In the case of a resistor, the voltage-current relationship is given by Ohm’s law, which states that the voltage across the resistor is equal to the current through the resistor multiplied by the value of the resistance. 就电阻来说, 电压—电流的关系由欧姆定律决定。欧姆定律指出:电阻两端的 电压等于电阻上流过的电流乘以电阻值。 2]It may be that the inductor voltage rather than the current is the variable of interest in the circuit. 或许在电路中,人们感兴趣的变量是电感电压而不是电感电流。 Viewed in this light, it will be found that the analysis of three-phase circuits is little more difficult than that of single-phase circuits. 这样看来,三相电路的分析比单相电路的分析难不了多少。 At unity power factor, the power in a single-phase circuit is zero twice each cycle. 在功率因数为 1时,单相电路里的功率值每个周波有两次为零。 It should be noted that if the polarity of point Awith respect to N ( is assumed for the positive half-cycle, then when used in the same phasor diagram should be drawn opposite to, or 180? out of phase with, . 应该注意,如果把 A 点相对于 N 的极性(定为正半周,那么在用于同一相量图中时就应该画得同相反,即相位差为 180? One problem with electronic devices corresponding to the generalized amplifiers is that the gains, AU or AI, depend upon internal properties of the two-port system. 对应于像广义放大器这样的电子装置,一个问题就是增益 AU 或者 AI ,它们取决于两输入端系统的内部特性。
数学专业英语论文(含中文版)
Differential Calculus Newton and Leibniz,quite independently of one another,were largely responsible for developing the ideas of integral calculus to the point where hitherto insurmountable problems could be solved by more or less routine methods.The successful accomplishments of these men were primarily due to the fact that they were able to fuse together the integral calculus with the second main branch of calculus,differential calculus. In this article, we give su ?cient conditions for controllability of some partial neutral functional di ?erential equations with in?nite delay. We suppose that the linear part is not necessarily densely de?ned but satis?es the resolvent estimates of the Hille -Yosida theorem. The results are obtained using the integrated semigroups theory. An application is given to illustrate our abstract result. Key words Controllability; integrated semigroup; integral solution; in?nity delay 1 Introduction In this article, we establish a result about controllability to the following class of partial neutral functional di ?erential equations with in?nite delay: 0,) ,()(0≥?? ???∈=++=?? t x xt t F t Cu ADxt Dxt t βφ (1) where the state variable (.)x takes values in a Banach space ).,(E and the control (.)u is given in []0),,,0(2>T U T L ,the Banach space of admissible control functions with U a Banach space. C is a bounded linear operator from U into E, A : D(A) ? E → E is a linear operator on E, B is the phase space of functions mapping (?∞, 0] into E, which will be speci?ed later, D is a bounded linear operator from B into E de?ned by B D D ∈-=????,)0(0 0D is a bounded linear operator from B into E and for each x : (?∞, T ] → E, T > 0, and t ∈ [0, T ], xt represents, as usual, the mapping from (?∞, 0] into E de?ned by ]0,(),()(-∞∈+=θθθt x xt F is an E-valued nonlinear continuous mapping on B ??+. The problem of controllability of linear and nonlinear systems repr esented by ODE in ?nit dimensional space was extensively studied. Many authors extended the controllability concept to in?nite dimensional systems in Banach space with unbounded operators. Up to now, there are a lot of works on this topic, see, for example, [4, 7, 10, 21]. There are many systems that can be written as abstract neutral evolution equations with in?nite delay to study [23]. In recent years, the theory of neutral functional di ?erential equations with in?nite delay in in?nite dimension was deve loped and it is still a ?eld of research (see, for instance, [2, 9, 14, 15] and the references therein). Meanwhile, the controllability problem of such systems was also discussed by many mathematicians, see, for example, [5, 8]. The objective of this article is to discuss the controllability for Eq. (1), where the linear part is supposed to be non-densely de?ned but satis?es the resolvent estimates of the Hille-Yosida theorem. We shall assume conditions that assure global existence and give the su ?cient conditions for controllability of some partial neutral functional di ?erential equations with in?nite delay. The results are obtained using the integrated semigroups theory and Banach ?xed point theorem. Besides, we make use of the notion of integral solution and we do not use the analytic semigroups theory. Treating equations with in?nite delay such as Eq. (1), we need to introduce the phase space B. To avoid repetitions and understand the interesting properties of the phase space, suppose that ).,(B B is a (semi)normed abstract linear space of functions mapping (?∞, 0] into E, and satis?es the following fundamental axioms that were ?rst introduced in [13] and widely discussed
机械专业外文翻译(中英文翻译)
外文翻译 英文原文 Belt Conveying Systems Development of driving system Among the methods of material conveying employed，belt conveyors play a very important part in the reliable carrying of material over long distances at competitive cost．Conveyor systems have become larger and more complex and drive systems have also been going through a process of evolution and will continue to do so．Nowadays，bigger belts require more power and have brought the need for larger individual drives as well as multiple drives such as 3 drives of 750 kW for one belt(this is the case for the conveyor drives in Chengzhuang Mine)．The ability to control drive acceleration torque is critical to belt conveyors’performance．An efficient drive system should be able to provide smooth，soft starts while maintaining belt tensions within the specified safe limits．For load sharing on multiple drives．torque and speed control are also important considerations in the drive system’s design. Due to the advances in conveyor drive control technology，at present many more reliable．Cost-effective and performance-driven conveyor drive systems covering a wide range of power are available for customers’ choices[1]. 1 Analysis on conveyor drive technologies 1．1 Direct drives Full-voltage starters．With a full-voltage starter design，the conveyor head shaft is direct-coupled to the motor through the gear drive．Direct full-voltage starters are adequate for relatively low-power, simple-profile conveyors．With direct fu11-voltage starters．no control is provided for various conveyor loads and．depending on the ratio between fu11-and no-1oad power requirements，empty starting times can be three or four times faster than full load．The maintenance-free starting system is simple，low-cost and very reliable．However, they cannot control starting torque and maximum stall torque；therefore．they are
英语专业 综合英语翻译句子答案
1.Our big old house was closely related with the joys and sorrows of four generations. 2.I planted these roses a long, long time ago before your mother was born. 3.Many sons left home to fight against the Fascist Nazi. 4.Take the first friendly greeting and always keep it deep in your heart. 1.He has prepared answers to the questions that he expects to confront during the interview. 2.His sad story touched us so deeply that we nearly cried. 3.The two of them are walking hand in hand along the river bank, chatting, laughing, and looking happy. 4.When he heart the exciting news, tears of joy welled up in his eyes. 5.People from Shanghai can understand Suzhou dialect with ease, for Shanghai dialect and Suzhou dialect have much in common. 6.Henry and his wife are looking into the possibility of buying a new house within three years. 7.He finally gave in to his daughter’s repeated requests to further her education abroad. 8.We locked all our valuables away before we went on holiday. 9.Although we have parted from eah other, I hope that we will remain good friends and that we will care for and help each other just as we did in the past. 10.At that critical moment, the army commander summoned all the officers to work out new strategies and tactics which would make it possible to conquer the enemy. Unit 2 1.A gracious manner adds the greatest splendour to your image. 2.I firmly believed the note my guest sent me didn’t take long to write. 3.The simple phrase “Excuse me.” made most of your irritation disappear. 4.Being on time is a virtue which belongs not only to the past but also to the present. 5.Y ou shouldn’t accept the other person’s presence without thinking of its importance. 6.Good manners produce the same feelings or actions in others. 1.I am sorry I am late; I was at a meeting and couldn’t get away. 2.At the concert whnever a singer finished singing a beautiful song, the audience would burst into loud cheers to show their appreciation. 3.As a stylish dresser, she is always wearing stylish clothes, but she seldom cares about what she eats or drinks. 4.The nurse tells me that the doctors have done wonders for your heart disease. 5.When awarding the prize, the chairman complimented the winner on his great contribution to mankind. 6.This problem has bothered the experts for many years. 7.The crowd of demonstrators melted away when the police arrived. 8.Since punctuality is a good habit, we should pay much attention to it and make great efforts to cultivate this good habit. 9.The old man cherishes that girl, as if she were his own daughter. 10.It is just a routine physical checkup, nothing to get worried about.
数学专业英语2-10翻译
Although dependence and independence are properties of sets of elements, we also apply these terms to the elements themselves. For example, the elements in an independent set are called independent elements. 虽然相关和无关是元素集的属性，我们也适用于这些元素本身。 例如，在一个独立设定的元素被称为独立元素。 If s is finite set, the foregoing definition agrees with that given in Chapter 8 for the space n V . However, the present definition is not restricted to finite sets. 如果S 是有限集，同意上述定义与第8章中给出的空间n V ，然而，目前的定义不局限于有限集。 If a subset T of a set S is dependent, then S itself is dependent. This is logically equivalent to the statement that every subset of an independent set is independent. 如果集合S 的子集T 是相关的，然后S 本身是相关的，这在逻辑上相当于每一个独立设置的子集是独立的语句。 If one element in S is a scalar multiple of another, then S is dependent. 如果S 中的一个元素是另一个集中的多个标量的，则S 是相关的。 If S ∈0,then S is dependent. 若S ∈0，则 S 是相关的。 The empty set is independent. 空集是无关的。 Many examples of dependent and independent sets of vectors in V were discussed in Chapter 8. The following examples illustrate these concepts in function spaces. In each case the underlying linear space V is the set of all real-valued function defined on the real line. V 中的向量的相关和无关设置的许多例子是在第8章讨论。下面的例子说明这些概念在函数空间。在每个 基本情况下，线性空间V 是实线定义的所有实值函数集。 Let 1)(),(sin )(,cos )(32221===t u t t u t t u for all real t. The Pythagorean identity show that 0321=-+u u u , so the three functions 321,,u u u are dependent. 321,,u u u 是相关的。 Let k k t t u =)(for k=0,1,2,…, and t real. The set ,...},,{210u u u S = is independent. To prove this, it suffices to show that for each n the n+1 polynomials n u u u ,...,,10 are independent. A relation of the form ∑=0k k u c means that
机械类数控车床外文翻译外文文献英文文献车床.doc
Lathes Lathes are machine tools designed primarily to do turning, facing and boring, Very little turning is done on other types of machine tools, and none can do it with equal facility. Because lathes also can do drilling and reaming, their versatility permits several operations to be done with a single setup of the work piece. Consequently, more lathes of various types are used in manufacturing than any other machine tool. The essential components of a lathe are the bed, headstock assembly, tailstock assembly, and the leads crew and feed rod. The bed is the backbone of a lathe. It usually is made of well normalized or aged gray or nodular cast iron and provides s heavy, rigid frame on which all the other basic components are mounted. Two sets of parallel, longitudinal ways, inner and outer, are contained on the bed, usually on the upper side. Some makers use an inverted V-shape for all four ways, whereas others utilize one inverted V and one flat way in one or both sets, They are precision-machined to assure accuracy of alignment. On most modern lathes the way are surface-hardened to resist wear and abrasion, but precaution should be taken in operating a lathe to assure that the ways are not damaged. Any inaccuracy in them usually means that the accuracy of the entire lathe is destroyed. The headstock is mounted in a foxed position on the inner ways, usually at the left end of the bed. It provides a powered means of rotating the word at various speeds . Essentially, it consists of a hollow spindle, mounted in accurate bearings, and a set of transmission gears-similar to a truck transmission—through which the spindle can be rotated at a number of speeds. Most lathes provide from 8 to 18 speeds, usually in a geometric ratio, and on modern lathes all the speeds can be obtained merely by moving from two to four levers. An increasing trend is to provide a continuously variable speed range through electrical or mechanical drives. Because the accuracy of a lathe is greatly dependent on the spindle, it is of heavy construction and mounted in heavy bearings, usually preloaded tapered roller or ball types. The spindle has a hole extending through its length, through which long bar stock can be fed. The size of maximum size of bar stock that can be machined when the material must be fed through spindle. The tailsticd assembly consists, essentially, of three parts. A lower casting fits on the inner ways of the bed and can slide longitudinally thereon, with a means for clamping the entire assembly in any desired location, An upper casting fits on the lower one and can be moved transversely upon it, on some type of keyed ways, to permit aligning the assembly is the tailstock quill. This is a hollow steel cylinder, usually about 51 to 76mm(2to 3 inches) in diameter, that can be moved several inches longitudinally in and out of the upper casting by means of a hand wheel and screw. The size of a lathe is designated by two dimensions. The first is known as the swing. This is the maximum diameter of work that can be rotated on a lathe. It is approximately twice the distance between the line connecting the lathe centers and the nearest point on the ways, The second size dimension is the maximum distance between centers. The swing thus indicates the maximum work piece diameter that can be turned in the lathe, while the distance between centers indicates the maximum length of work piece that can be mounted between centers. Engine lathes are the type most frequently used in manufacturing. They are heavy-duty machine tools with all the components described previously and have power drive for all tool movements except on the compound rest. They commonly range in size from 305 to 610 mm(12 to 24 inches)swing and from 610 to 1219 mm(24 to 48 inches) center distances, but swings up to 1270 mm(50 inches) and center distances up
服装专业外语重点段落翻译
Fashion,which is as old as time and as new as tomorrow,is one of the most powerful forces in our lives .It influences what we wear,the way we talk,the foods we eat,the way we live,how and where we travel,what we travel,what we look at,and what we listen to.Fashion is what lead us todiscard a product that is still useful but is no longer ―in‖.It is also what makes us sometimes wear more clothes than we may actually need,and sometimes less than is needed to product us from the ccold or the sun. 流行是这样一种事物，是我们抛弃了还可以使用，但不再时髦的产品。有时候使我们穿比我们真正穿的衣服多，有时候比我们穿抵御严寒酷暑的少。 If there is one absolute constant pertaining to fashion,it is the fact that it is always changing-sometimes rapidly,sometimes slowly,but it is never static or dormant.This element of change is recognized in the definitions of fashion itself cited earlier,by the use of such words as ―prevailing‖or ―a given period of time.‖To ignore the element of change is like looking at a still photograph in place of a motion picture.The still tells you what is happening here and now ;the motion picture shows you what came before and what may lie ahead. 如果存在着一种符合流行的绝对永恒，那就是流行是永远变化着的这一事实，（这种变化）时快时慢，但绝不会固定下来或呈休止状态。 “Fashion is a social phenomenon which reflects the same continuing change that rides through any given age .‖Change in fashion ,he emphasized,‘correspond with the subtle and often hidden network of forces that operate on society……’ “流行是一种社会现象，它反映了任何特定年代同样都要经历的持续变化。‖他强调说：“流行变迁与那些作用于社会的影响力量所具有的微妙，而又常常是暗藏着的系统是一致的。”It is only in restrospect that fashion changes seem marked or sudden .Autually ,they come about as a result of a series of gradual shifts from one season to the next.For example ,when women’s skirts began inching up from midcalf in the 1960s,this gradual shortening was not particularly noticeable at first .It was only when skirts moved thigh-high,in the form of minis and micro-minis ,that people took notice of the approaching extreme.Similarly,when men begin to abandon ultrannarrow ties and suit lapels in favor of more and more width,the changs are not noticed at first. 只有当追溯过去的时候，流行的变迁才显得特别引人注目或突然，实际上，这些变迁的发生是从一个季节到另一个季节的一系列逐渐变化的结果。例如，女裙的逐渐变短的时候并没有被注意到，。 ………………………………………………………… Color can be the basis for a whole group or line .It is the first element to which consumers respond .People relate personally to color,usually either selecting or rejecting a garment beccause of its ccolor appeal.Therefore,designers must cconsider their customers and provide colors that are both appealing and flattering. 色彩是整个款式系列中的基本要素，它是能够引起顾客回应的第一要素。人们把色彩和个人联系起来，他们往往根据颜色来选择或拒绝一件衣服，因此设计师必须考虑他们的顾客，并且提供出令他们喜爱和满意的色彩，消费群体。 In clothing,neutrals such as beige,tan,brown,white ,gray,and black are even more popular than the ccolors just mentioned.The reason is probably that they present a pleasing background for the wearer without completing for attention. Neutrals are part of every season‖s fashion picture ,as either a strong fashion statement or a way to round out a color story. 在服装中，中色调例如灰中色，深褐，褐色，白灰和黑色，甚至还有比刚刚提到的更多的
数学专业英语第二版-课文翻译-converted
2.4 整数、有理数与实数 4－A Integers and rational numbers There exist certain subsets of R which are distinguished because they have special properties not shared by all real numbers. In this section we shall discuss such subsets, the integers and the rational numbers. 有一些R 的子集很著名，因为他们具有实数所不具备的特殊性质。在本节我们将讨论这样的子集，整数集和有理数集。 To introduce the positive integers we begin with the number 1, whose existence is guaranteed by Axiom 4. The number 1+1 is denoted by 2, the number 2+1 by 3, and so on. The numbers 1,2,3,…, obtained in this way by repeated addition of 1 are all positive, and they are called the positive integers. 我们从数字 1 开始介绍正整数，公理 4 保证了 1 的存在性。1+1 用2 表示，2+1 用3 表示，以此类推，由 1 重复累加的方式得到的数字 1,2,3，…都是正的，它们被叫做正整数。 Strictly speaking, this description of the positive integers is not entirely complete because we have not explained in detail what we mean by the expressions “and so on”, or “repeated addition of 1”. 严格地说，这种关于正整数的描述是不完整的，因为我们没有详细解释“等等”或者“1的重复累加”的含义。 Although the intuitive meaning of expressions may seem clear, in careful treatment of the real-number system it is necessary to give a more precise definition of the positive integers. There are many ways to do this. One convenient method is to introduce first the notion of an inductive set. 虽然这些说法的直观意思似乎是清楚的，但是在认真处理实数系统时必须给出一个更准确的关于正整数的定义。有很多种方式来给出这个定义，一个简便的方法是先引进归纳集的概念。 DEFINITION OF AN INDUCTIVE SET. A set of real number s is cal led an i n ductiv e set if it has the following two properties: (a) The number 1 is in the set. (b) For every x in the set, the number x+1 is also in the set. For example, R is an inductive set. So is the set . Now we shall define the positive integers to be those real numbers which belong to every inductive set. 现在我们来定义正整数，就是属于每一个归纳集的实数。 Let P d enote t he s et o f a ll p ositive i ntegers. T hen P i s i tself a n i nductive set b ecause (a) i t contains 1, a nd (b) i t c ontains x+1 w henever i t c ontains x. Since the m embers o f P b elong t o e very inductive s et, w e r efer t o P a s t he s mallest i nductive set. 用 P 表示所有正整数的集合。那么 P 本身是一个归纳集，因为其中含 1，满足(a)；只要包含x 就包含x+1, 满足(b)。由于 P 中的元素属于每一个归纳集，因此 P 是最小的归纳集。 This property of P forms the logical basis for a type of reasoning that mathematicians call proof by induction, a detailed discussion of which is given in Part 4 of this introduction.