中英文文献以及翻译(化工类)

Foreign material：

Chemical Industry

1.Origins of the Chemical Industry

Although the use of chemicals dates back to the ancient civilizations, the evolution of what we know as the modern chemical industry started much more recently. It may be considered to have begun during the Industrial Revolution, about 1800, and developed to provide chemicals roe use by other industries. Examples are alkali for soapmaking, bleaching powder for cotton, and silica and sodium carbonate for glassmaking. It will be noted that these are all inorganic chemicals. The organic chemicals industry started in the 1860s with the exploitation of William Henry Perkin’s discovery if the first synthetic dyestuff—mauve. At the start of the twentieth century the emphasis on research on the applied aspects of chemistry in Germany had paid off handsomely, and by 1914 had resulted in the German chemical industry having 75% of the world market in chemicals. This was based on the discovery of new dyestuffs plus the development of both the contact process for sulphuric acid and the Haber process for ammonia. The later required a major technological breakthrough that of being able to carry out chemical reactions under conditions of very high pressure for the first time. The experience gained with this was to stand Germany in good stead, particularly with the rapidly increased demand for nitrogen-based compounds (ammonium salts for fertilizers and nitric acid for explosives manufacture) with the outbreak of world warⅠin 1914. This initiated profound changes which continued during the inter-war years (1918-1939).

Since 1940 the chemical industry has grown at a remarkable rate, although this has slowed significantly in recent years. The lion’s share of this growth has been in the organic chemicals sector due to the development and growth of the petrochemicals area since 1950s. The explosives growth in petrochemicals in the 1960s and 1970s was largely due to the enormous increase in demand for synthetic polymers such as polyethylene, polypropylene, nylon, polyesters and epoxy resins.

The chemical industry today is a very diverse sector of manufacturing industry, within which it plays a central role. It makes thousands of different chemicals which

the general public only usually encounter as end or consumer products. These products are purchased because they have the required properties which make them suitable for some particular application, e.g. a non-stick coating for pans or a weedkiller. Thus chemicals are ultimately sold for the effects that they produce.

2. Definition of the Chemical Industry

At the turn of the century there would have been little difficulty in defining what constituted the chemical industry since only a very limited range of products was manufactured and these were clearly chemicals, e.g., alkali, sulphuric acid. At present, however, many intermediates to products produced, from raw materials like crude oil through (in some cases) many intermediates to products which may be used directly as consumer goods, or readily converted into them. The difficulty cones in deciding at which point in this sequence the particular operation ceases to be part of the chemical industry’s sphere of activities. To consider a specific example to illustrate this dilemma, emulsion paints may contain poly (vinyl chloride) / poly (vinyl acetate). Clearly, synthesis of vinyl chloride (or acetate) and its polymerization are chemical activities. However, if formulation and mixing of the paint, including the polymer, is carried out by a branch of the multinational chemical company which manufactured the ingredients, is this still part of the chemical industry of does it mow belong in the decorating industry?

It is therefore apparent that, because of its diversity of operations and close links in many areas with other industries, there is no simple definition of the chemical industry. Instead each official body which collects and publishes statistics on manufacturing industry will have its definition as to which operations are classified as the chemical industry. It is important to bear this in mind when comparing statistical information which is derived from several sources.

3. The Need for Chemical Industry

The chemical industry is concerned with converting raw materials, such as crude oil, firstly into chemical intermediates and then into a tremendous variety of other chemicals. These are then used to produce consumer products, which make our lives

more comfortable or, in some cases such as pharmaceutical produces, help to maintain our well-being or even life itself. At each stage of these operations value is added to the produce and provided this added exceeds the raw material plus processing costs then a profit will be made on the operation. It is the aim of chemical industry to achieve this.

It may seem strange in textbook this one to pose the question ―do we need a chemical industry?‖ However trying to answer this question will provide(ⅰ) an indication of the range of the chemical industry’s activities, (ⅱ) its influence on our lives in everyday terms, and (ⅲ) how great is society’s need for a chemical industry. Our approach in answering the question will be to consider the industry’s co ntribution to meeting and satisfying our major needs. What are these? Clearly food (and drink) and health are paramount. Other which we shall consider in their turn are clothing and (briefly) shelter, leisure and transport.

(1)Food. The chemical industry makes a major contribution to food production in at least three ways. Firstly, by making available large quantities of artificial fertilizers which are used to replace the elements (mainly nitrogen, phosphorus and potassium) which are removed as nutrients by the growing crops during modern intensive farming. Secondly, by manufacturing crop protection chemicals, i.e., pesticides, which markedly reduce the proportion of the crops consumed by pests. Thirdly, by producing veterinary products which protect livestock from disease or cure their infections.

(2)Health. We are all aware of the major contribution which the pharmaceutical sector of the industry has made to help keep us all healthy, e.g. by curing bacterial infections with antibiotics, and even extending life itself, e.g. ?–blockers to lower blood pressure.

(3)Clothing. The improvement in properties of modern synthetic fibers over the traditional clothing materials (e.g. cotton and wool) has been quite remarkable. Thus shirts, dresses and suits made from polyesters like Terylene and polyamides like Nylon are crease-resistant, machine-washable, and drip-dry or non-iron. They are also cheaper than natural materials.Parallel developments in the discovery of modern synthetic dyes and the technology to ―bond‖ th em to the fiber has resulted in a tremendous increase in the variety of colors available to the fashion designer. Indeed they now span almost every color and hue of the visible spectrum. Indeed if a suitable shade is not available, structural modification of an existing dye to achieve this can

readily be carried out, provided there is a satisfactory market for the product.Other major advances in this sphere have been in color-fastness, i.e., resistance to the dye being washed out when the garment is cleaned.

(4)Shelter, leisure and transport. In terms of shelter the contribution of modern synthetic polymers has been substantial. Plastics are tending to replace traditional building materials like wood because they are lighter, maintenance-free (i.e. they are resistant to weathering and do not need painting). Other polymers, e.g. urea-formaldehyde and polyurethanes, are important insulating materials f or reducing heat losses and hence reducing energy usage.

Plastics and polymers have made a considerable impact on leisure activities with applications ranging from all-weather artificial surfaces for athletic tracks, football pitches and tennis courts to nylon strings for racquets and items like golf balls and footballs made entirely from synthetic materials.

Like wise the chemical industry’s contribution to transport over the years has led to major improvements. Thus development of improved additives like anti-oxidants and viscosity index improves for engine oil has enabled routine servicing intervals to increase from 3000 to 6000 to 12000 miles. Research and development work has also resulted in improved lubricating oils and greases, and better brake fluids. Yet again the contribution of polymers and plastics has been very striking with the proportion of the total automobile derived from these materials—dashboard, steering wheel, seat padding and covering etc.—now exceeding 40%.

So it is quite apparent even from a brief look at the chemical industry’s contribution to meeting our major needs that life in the world would be very different without the products of the industry. Indeed the level of a country’s development may be judged by the production level and sophistication of its chemical industry4. Research and Development (R&D) in Chemical Industries

One of the main reasons for the rapid growth of the chemical industry in the developed world has been its great commitment to, and investment in research and development (R&D). A typical figure is 5% of sales income, with this figure being almost doubled for the most research intensive sector, pharmaceuticals. It is important to emphasize that we are quoting percentages here not of profits but of sales income, i.e. the total money received, which has to pay for raw materials, overheads, staff salaries, etc. as well. In the past this tremendous investment has paid off well, leading to many useful and valuable products being introduced to the market. Examples

include synthetic polymers like nylons and polyesters, and drugs and pesticides. Although the number of new products introduced to the market has declined significantly in recent years, and in times of recession the research department is usually one of the first to suffer cutbacks, the commitment to R&D remains at a very high level.

The chemical industry is a very high technology industry which takes full advantage of the latest advances in electronics and engineering. Computers are very widely used for all sorts of applications, from automatic control of chemical plants, to molecular modeling of structures of new compounds, to the control of analytical instruments in the laboratory.

Individual manufacturing plants have capacities ranging from just a few tones per year in the fine chemicals area to the real giants in the fertilizer and petrochemical sectors which range up to 500,000 tonnes. The latter requires enormous capital investment, since a single plant of this size can now cost $520 million! This, coupled with the widespread use of automatic control equipment, helps to explain why the chemical industry is capital-rather than labor-intensive.

The major chemical companies are truly multinational and operate their sales and marketing activities in most of the countries of the world, and they also have manufacturing units in a number of countries. This international outlook for operations, or globalization, is a growing trend within the chemical industry, with companies expanding their activities either by erecting manufacturing units in other countries or by taking over companies which are already operating there.

化学工业

1.化学工业的起源

尽管化学品的使用可以追溯到古代文明时代，我们所谓的现代化学工业的发展却是非常近代（才开始的）。可以认为它起源于工业革命其间，大约在1800年，并发展成为为其它工业部门提供化学原料的产业。比如制肥皂所用的碱，棉

布生产所用的漂白粉，玻璃制造业所用的硅及Na

2CO

3

. 我们会注意到所有这些都

是无机物。有机化学工业的开始是在十九世纪六十年代以William Henry Perkin 发现第一种合成染料—苯胺紫并加以开发利用为标志的。20世纪初，德国花费大量资金用于实用化学方面的重点研究，到1914年，德国的化学工业在世界化学产品市场上占有75%的份额。这要归因于新染料的发现以及硫酸的接触法生产和氨的哈伯生产工艺的发展。而后者需要较大的技术突破使得化学反应第一次可以在非常高的压力条件下进行。这方面所取得的成绩对德国很有帮助。特别是由于1914年第一次世界大仗的爆发，对以氮为基础的化合物的需求飞速增长。这种深刻的改变一直持续到战后

1940年以来，化学工业一直以引人注目的速度飞速发展。尽管这种发展的速度近年来已大大减慢。化学工业的发展由于1950年以来石油化学领域的研究和开发大部分在有机化学方面取得。石油化工在60年代和70年代的迅猛发展主要是由于人们对于合成高聚物如聚乙烯、聚丙烯、尼龙、聚脂和环氧树脂的需求巨大增加。

今天的化学工业已经是制造业中有着许多分支的部门，并且在制造业中起着核心的作用。它生产了数千种不同的化学产品，而人们通常只接触到终端产品或消费品。这些产品被购买是因为他们具有某些性质适合（人们）的一些特别的用途，例如，用于盆的不粘涂层或一种杀虫剂。这些化学产品归根到底是由于它们能产生的作用而被购买的。

2.化学工业的定义

在本世纪初，要定义什么是化学工业是不太困难的，因为那时所生产的化学

品是很有限的，而且是非常清楚的化学品，例如，烧碱，硫酸。然而现在有数千种化学产品被生产，从一些原料物质像用于制备许多的半成品的石油，到可以直接作为消费品或很容易转化为消费品的商品。困难在于如何决定在一些特殊的生产过程中哪一个环节不再属于化学工业的活动范畴。举一个特殊的例子来描述一下这种困境。乳剂漆含有聚氯乙烯/聚醋酸乙烯。显然，氯乙烯（或醋酸乙烯）的合成以及聚合是化学活动。然而，如果这种漆，包括高聚物，它的配制和混合是由一家制造配料的跨国化学公司完成的话，那它仍然是属于化学工业呢还是应当归属于装饰工业中去呢？

因此，很明显，由于化学工业经营的种类很多并在很多领域与其它工业有密切的联系，所以不能对它下一个简单的定义。相反的每一个收集和出版制造工业统计数据的官方机构都会对如何届定哪一类操作为化学工业有自己的定义。当比较来自不同途径的统计资料时，记住这点是很重要的。

3.对化学工业的需要

化学工业涉及到原材料的转化，如石油首先转化为化学中间体，然后转化为数量众多的其它化学产品。这些产品再被用来生产消费品，这些消费品可以使我们的生活更为舒适或者作药物维持人类的健康或生命。在生产过程的每一个阶段，都有价值加到产品上面，只要这些附加的价值超过原材料和加工成本之和，这个加工就产生了利润。而这正是化学工业要达到的目的。

在这样的一本教科书中提出：“我们需要化学工业吗？”这样一个问题是不是有点奇怪呢？然而，先回答下面几个问题将给我们提供一些信息：（1）化学工业的活动范围，（2）化学工业对我们日常生活的影响，（3）社会对化学工业的需求有多大。在回答这些问题的时候我们的思路将要考虑化学工业在满足和改善我们的主要需求方面所做的贡献。是些什么需求呢？很显然，食物和健康是放在第一位的。其它我们要考虑的按顺序是衣物、住所、休闲和旅行。

(1)食物。化学工业对粮食生产所做的巨大贡献至少有三个方面。第一，提供大量可以获得的肥料以补充由于密集耕作被农作物生长时所带走的营养成分。（主要是氮、磷和钾）。第二，生产农作物保护产品，如杀虫剂，它可以显著减少害虫所消耗的粮食数量。第三，生产兽药保护家禽免遭疾病或其它感染的侵害。

（2）健康。我们都很了解化学工业中制药这一块在维护我们的身体健康甚至延长寿命方面所做出的巨大贡献，例如，用抗生素治疗细菌感染，用β-抗血栓降低血压。

（3）衣物。在传统的衣服面料上，现代合成纤维性质的改善也是非常显著的。用聚脂如涤纶或聚酰胺如尼龙所制作的T恤、上衣、衬衫抗皱、可机洗，晒

干自挺或免烫，也比天然面料便宜。与此同时，现代合成染料开发和染色技术的改善使得时装设计师们有大量的色彩可以利用。的确他们几乎利用了可见光谱中所有的色调和色素。事实上如果某种颜色没有现成的，只要这种产品确有市场，就可以很容易地通过对现有的色彩进行结构调整而获得。这一领域中另一些重要进展是不褪色，即在洗涤衣物时染料不会被洗掉。

（4）住所，休闲和旅游。讲到住所方面现代合成高聚物的贡献是巨大的。塑料正在取代像木材一类的传统建筑材料，因为它们更轻，免维护（即它们可以抵抗风化，不需油漆）。另一些高聚物，比如，脲甲醛和聚脲，是非常重要的绝缘材料可以减少热量损失因而减少能量损耗。

塑料和高聚物的应用对休闲活动有很重要的影响，从体育跑道的全天候人造篷顶，足球和网球的经纬线，到球拍的尼龙线还有高尔夫球的元件，还有制造足球的合成材料。

多年来化学工业对旅游方面所作的贡献也有很大的提高。一些添加剂如抗氧化剂的开发和发动机油粘度指数改进使汽车日产维修期限从3000英里延长到6000英里再到12000英里。研发工作还改进了润滑油和油脂的性能，并得到了更好的刹车油。塑料和高聚物对整个汽车业的贡献的比例是惊人的，源于这些材料—挡板，轮胎，坐垫和涂层等等—超过40%。

很显然简单地看一下化学工业在满足我们的主要需求方面所做的贡献就可以知道，没有化工产品人类社会的生活将会多么困难。事实上，一个国家的发展水平可以通过其化学工业的生产水平和精细程度来加以判断。

发达国家化学工业飞速发展的一个重要原因就是它在研究和开发方面的投入和投资。通常是销售收入的5%，而研究密集型分支如制药，投入则加倍。要强调这里我们所提出的百分数不是指利润而是指销售收入，也就是说全部回收的钱，其中包括要付出原材料费，企业管理费，员工工资等等。过去这笔巨大的投资支付得很好，使得许多有用的和有价值的产品被投放市场，包括一些合成高聚物如尼龙和聚脂，药品和杀虫剂。尽管近年来进入市场的新产品大为减少，而且在衰退时期研究部门通常是最先被裁减的部门，在研究和开发方面的投资仍然保持在较高的水平。

化学工业是高技术工业，它需要利用电子学和工程学的最新成果。计算机被广泛应用，从化工厂的自动控制，到新化合物结构的分子模拟，再到实验室分析仪器的控制。

一个制造厂的生产量很不一样，精细化工领域每年只有几吨，而巨型企业如化肥厂和石油化工厂有可能高达500,000吨。后者需要巨大的资金投入，因为一个这样规模的工厂要花费2亿5千万美元，再加上自动控制设备的普遍应用，就

不难解释为什么化工厂是资金密集型企业而不是劳动力密集型企业。

大部分化学公司是真正的跨国公司，他们在世界上的许多国家进行销售和开发市场，他们在许多国家都有制造厂。这种国际间的合作理念，或全球一体化，是化学工业中发展的趋势。大公司通过在别的国家建造制造厂或者是收购已有的工厂进行扩张。

中英文文献翻译

毕业设计（论文）外文参考文献及译文 英文题目Component-based Safety Computer of Railway Signal Interlocking System 中文题目模块化安全铁路信号计算机联锁系统 学院自动化与电气工程学院 专业自动控制 姓名葛彦宁 学号 200808746 指导教师贺清 2012年5月30日

Component-based Safety Computer of Railway Signal Interlocking System 1 Introduction Signal Interlocking System is the critical equipment which can guarantee traffic safety and enhance operational efficiency in railway transportation. For a long time, the core control computer adopts in interlocking system is the special customized high-grade safety computer, for example, the SIMIS of Siemens, the EI32 of Nippon Signal, and so on. Along with the rapid development of electronic technology, the customized safety computer is facing severe challenges, for instance, the high development costs, poor usability, weak expansibility and slow technology update. To overcome the flaws of the high-grade special customized computer, the U.S. Department of Defense has put forward the concept：we should adopt commercial standards to replace military norms and standards for meeting consumers’demand [1]. In the meantime, there are several explorations and practices about adopting open system architecture in avionics. The United Stated and Europe have do much research about utilizing cost-effective fault-tolerant computer to replace the dedicated computer in aerospace and other safety-critical fields. In recent years, it is gradually becoming a new trend that the utilization of standardized components in aerospace, industry, transportation and other safety-critical fields. 2 Railways signal interlocking system 2.1 Functions of signal interlocking system The basic function of signal interlocking system is to protect train safety by controlling signal equipments, such as switch points, signals and track units in a station, and it handles routes via a certain interlocking regulation. Since the birth of the railway transportation, signal interlocking system has gone through manual signal, mechanical signal, relay-based interlocking, and the modern computer-based Interlocking System. 2.2 Architecture of signal interlocking system Generally, the Interlocking System has a hierarchical structure. According to the function of equipments, the system can be divided to the function of equipments; the system

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文献翻译英文原文

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a ," , , , . a ( , , , ). . . , , a . $50 . Birmingham, England, 2000. 1995, Delphi, 7596 . 37 10 , . a . , a a , a , a , a a a . a a , a . , , . , , , . a , , , . , , a . : . . 电子动力转向系统 电子动力转向系统是什么? 电子动力转向系统是通过一个电动机来驱动动力方向盘液压泵或直接驱动转向联动装置。电子动力转向的功能由于不依赖于发动机转速，所以能节省能源电子动力转向系统是怎么运行？： 传统的动力方向盘系统使用一条引擎辅助传送带驾驶气泵，提供操作在动力方向盘齿轮或作动器的一个活塞协助驱动的被加压的流体。在电动液压的控制，一个电子动力方向盘包括一台电动机控制的一个高效率泵浦。由一个电控制器调控泵浦压力和流速来控制泵浦的速度，为不同的驾驶路况的提供转向。泵浦可以在汽车行驶低速时关闭以提供节能（在当代的世界市场上)。 电动控制转向使用电动机通过齿轮齿条机构直接连接以达到转向控制（无泵或液体）。多个电机驱动器和多驱动控制的实现是可能的。一个微处理器控制转向动态和驱动的工作。输入因子包括车速，转向，车轮扭矩，角度位置和转率。

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VOLUME 30 ISSUE 2 October 2008 Journal of Achievements in Materials and Manufacturing Engineering Copyright by International OCSCO World Press. All rights reserved.2008 151 Research paper 2008年十月期2卷30 材料与制造工程成果期刊 版权所有：国际OCSCO 世界出版社。一切权利保有。2008 ？？151研究论文 1. Introduction Friction stir welding (FSW) is a new solid-state welding method developed by The Welding Institute (TWI) in 1991 [1]. The weld is formed by the excessive deformation of the material at temperatures below its melting point, thus the method is a solid state joining technique. There is no melting of the material, so FSW has several advantages over the commonly used fusion welding techniques [2-10]. 1.导言摩擦搅拌焊接（FSW）是焊接学？会于1991年研发的一种新型固态焊接方法。这种焊接？是由材料在低于其熔点的温度上过量变形形成，因此此技术是一种固态连接技术。材料不熔化，所以FSW 相比常用的熔化焊接技术有若干优势。例如，在焊接区无多孔性或破裂，工件（尤其薄板上）没有严重扭曲，并且在连接过程中不需要填料、保护气及昂贵的焊接准备there is no significant distortion of the workpieces (particularly in thin plates), and there is no need for filler materials, shielding gases and costly weld preparation during this joining process. FSW被认为是对若干材料例如铝合金、镁合金、黄铜、钛合金及钢最显著且最有潜在用途的焊接技术FSW is considered to be the most remarkable and potentially useful welding technique for several materials, such as Al-alloys, Mg-alloys, brasses, Ti-alloys, and steels [1-16]. 然而，在FSW过程中，用不合适的焊接参数能引起连接处失效，并且使FSW连接处的力学性能恶化。However, during FSW process using inappropriate welding parameters can cause defects in the joint and deteriorate the mechanical properties of the FSW joints [2, 3]. 此技术起初就主要是为低熔点材料如铝合金、镁合金及铜合金而广泛研究的。The technique has initially been widely investigated for mostly low melting materials, such as Al, Mg and Cu alloys. 此技术已被证明是很有用的，尤其在连接用于航空航天用途的如高合金2XXX及7XXX系列铝合金等难熔高强度的铝合金。It has proven to be very useful, particularly in the joining of the difficult-to-fusion join high strength Al-alloys used in aerospace applications, such as highly alloyed 2XXX and 7XXX series aluminium alloys. 做出Al-5086 H32型板摩擦搅拌对焊的高强度、抗疲劳及断裂的力学性能？。The difficulty of making high-strength, fatigue and fracture resistant Mechanical properties of friction stir butt-welded Al-5086 H32 plate G. .am a,*, S. Gü.lüer b, A. .akan c, H.T. Serinda. a a Mustafa Kemal University, Faculty of Engineering and Architecture, 31040 Antakya, Turkey a 土耳其安塔卡亚31040，Mustafa Kemal大学建筑工程系 b General Directorate of Highways of Turkey, Ankara, Turkey b 土耳其安卡拉土耳其高速公路总理事会？ c Abant Izzet Baysal University, Faculty of Engineering an d Architecture, 14280 Bolu, Turkey c 土耳其Bolu 14280 Abant Izzet Baysal 大学建筑工程系 * Corresponding author: E-mail address: gurelcam@https://www.sodocs.net/doc/414813881.html, *相关作者电子邮箱地址：gurelcam@https://www.sodocs.net/doc/414813881.html, Received 30.06.2008; published in revised form 01.10.2008

仪表板外文文献翻译、中英文翻译、外文翻译

Dashboard From Wikipedia, the free encyclopedia This article is about a control panel placed in the front of the car. For other uses, see Dashboard (disambiguation). The dashboard of a Bentley Continental GTC car A dashboard (also called dash, instrument panel (IP), or fascia) is a control panel located directly ahead of a vehicle's driver, displaying instrumentation and controls for the vehicle's operation. Contents 1.Etymology 2.Dashboard features 3.Padding and safety 4.Fashion in instrumentation 5.See also 6.References Etymology Horse-drawn carriage dashboard Originally, the word dashboard applied to a barrier of wood or leather fixed at the front of a horse-drawn carriage or sleigh to protect the driver from mud or other debris "dashed up" (thrown up) by the horses' hooves.[1] Commonly these boards did not perform any additional function other than providing a convenient handhold for ascending into the driver's seat, or a small clip with which to secure the reins when not in use. When the first "horseless carriages" were constructed in the late 19th century, with engines mounted beneath the driver such as the Daimler Stahlradwagen, the simple dashboard was retained to protect occupants from debris thrown up by the cars' front wheels. However, as car design evolved to position the motor in front of the driver, the dashboard became a panel that protected vehicle occupants from the heat and oil of the engine. With gradually increasing mechanical complexity, this panel formed a convenient location for the placement of gauges and minor controls, and from this evolved the modern instrument panel,