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There was an increasing demand for engine power due to industrial development. As early as the 2nd century BC, the ancient Greeks invented an engine that was powered by the reaction from spurting steam; in 1690, the Frenchman Barben invented the first piston steam engine. On the basis of his predecessors' work and with his own hard work and numerous trials and failures, James Watt invented the steam engine with connecting rod, flywheel and centrifugal speed governor in 1782.In 1784, the British government granted a patent to James Watt for producing steam engines, which signified that man had entered the age of the steam engine and also significantly expedited the beginning of the Industrial Revolution in 18th century Europe. By the 1830s, steam engines had been widely used in various sectors such as textile, metallurgy, coal mining and transportation; for example, the American Robert Fulton invented the steamboat and the Englishman George Stephenson invented the steam locomotive.

随着社会的进步，社会由农业时代进入工业时代后，对全用手工操作已十分不满足，人们随着工业发展对动力的需求日益突出，瓦特在前人研究蒸汽的基础上，甚至早在公元前二世纪，古希腊人创造的一种利用蒸汽喷射的反作用的发动机，以及1690年法国人巴比首先发明第一台活塞式蒸气机等，刻苦钻研，反复实验，经历无数次挫折和失败，终于在1782年发明了具有连杆、飞轮和离心调速器的双动作蒸气机，使之成为了可以实用的蒸气机。1784年英国政府授予瓦特以制造蒸气机的专利证书，这标志着人类进入了蒸气机时代，有力地促进了欧洲18世纪的产业革命。

The paper presents a way that on a diesel engine the fuel ethanol is used blended with gasoline as its additive. On the base of analyzing the physical, chemical and mixing proportion characteristics of ethanol-diesel-gasoline blended fuel, combustion characteristic and the effect on diesel engine performance using the blended fuel with different proportional component are studied on a 135 diesel engine. At the same time, the effect on the diesel engine performance and combustion characteristics using the blend fuel are also studied under different diesel engine parameter.

本文阐述了在柴油机上以汽油为助溶剂应用燃料乙醇的一种方法，在分析乙醇-柴油-汽油混合燃料的物化特性和配比特性的基础上，试验研究了在135柴油机上燃用不同比例的混合燃料对柴油机性能的影响及其燃烧特性；同时，还研究了在不同的柴油机参数下应用混合燃料对柴油机性能和排放特性的影响。

He has to write a book to introduce the engine in the language of the native people, so that they can read the true mechanism of the engine, and perceive the tangibility of the engine by reading the book. And only then do they believe the function of the engine, and accept, produce and use the engine.

他只能用当地人的地方语言写作介绍发动机的书，让当地人通过他写的书，从中读到发动机的真实机理，感觉到发动机的真实性，他们才会相信发动机的功能作用，才会接受、生产和运用发动机。

It contains establishing control model of this engine, the models are based on engine average value in time, they can be divided as intake manifold, engine dynamics, velometer section and other subsystem model of CBM engine. Besides these, it also contains model of sensors using in engine intake system and running detection, model of step motor using in driving throttle.

文章主体的内容包括建立发动机燃用变组分燃料的控制模型，建模的思路是采用基于时间的发动机平均值模型，其中分为进气歧管、发动机动力学、调速器等发动机各子系统模型，另外包括对发动机进气系统、运行参数进行检测的传感器模型以及驱动阀门的步进电机模型等。

The possiblehost objective reason all is very many, but, our country numericalcontrol engine bed function part development backwardness -- varietyfew, unit technical level low, performance quality insufficientlystable, the cost stays at a high level, the delivery insufficientlywas prompt and so on -- not to be able to satisfy the numericalcontrol engine bed main engine product need to develop, had noalternative but to say was most direct, the most main reason, Becauseall numerical controls engine bed all is by each kind of function part(including host 轴头, straight line rolls guide rail, ball bearingguide screw vice-, numerical control tool rest, knife storehousemanipulator, rotary table, numerical control servosystem, surveyfeedback as well as safe protective equipment and so on), the functionpart which on foundation rack and so on the lathe bed, column thecollection attire becomes is the numerical control engine bedimportant component, moreover is the indispensable part.

可能主客观原因都是很多的，但是，我国数控机床功能部件的发展落后──品种少，单元技术水平低，性能质量不够稳定，成本居高不下，交货不够及时等──满足不了数控机床主机产品发展的需要，不能不说是最直接、最主要的原因，因为所有的数控机床都是由各种功能部件（包括主轴头、直线滚动导轨、滚珠丝杠副、数控刀架、刀库机械手、回转工作台、数控伺服系统、测量反馈以及安全防护装置等）在床身、立柱等基础机架上集装而成的，功能部件是数控机床的重要组成部份，而且是不可或缺的部份。

By utilizing electromagnetic valve, we can control opening and closing timings of intake and exhaust valves according to the operating situation of the engine. Therefore, the engine performance can be improved suitably in exhaut emission during starting, idle stability, fuel comsumption and engine power, etc. When an engine rotates in the low speed, gas flow is bad and the throttle which adjusts air mass is apt to cause the pumping lose of the engine.

中文摘要传统机械式可变汽门正时系统为分段固定式机构，无法根据引擎转速以及负载变化来提供适当的汽门正时；利用电磁式气阀可根据引擎当时状况控制进排气门的开启与关闭正时以及汽门持续开启正时，因此引擎在冷启动废气排放、怠速稳定性、燃油消耗率以及引擎性能等方面均相当之改善。

This the likelihood is temporary for a lot of websites rely on to collect, visit quantity is returned still considerable, but if you are collected everybody has collected the website, or you never had updated is to be achieved formerly, it is oneself are written, it is to mend one's ways of the character, your website is dangerous, searching engine know, the collects now order on Internet is increasing, more and more center institutes are lazy, thought to find support, collect all the day, but be not alled alone by search engine is collected namely, visit a quantity to go up not to go namely, likelihood you are this reason guide come, hope you calculate collect content, be about to change, search what engine can think you are to be achieved formerly so.

这个可能暂时来说很多网站都是靠采集的，访问量还依然可观，但是假如你采集的网站都是大家都已经采过的，或者你从来没有更新过一篇是原创、是自己写、是改过文字的，那你的网站危险了，搜索引擎是知道的，互联网上现在采集的程序越来越多，越来越多的站长学会偷懒，认为找到了依靠，整天采集，可是就是不被搜索引擎收录，就是访问量上不去，可能你就是这个原因导至的，希望你就算采到内容了，就要改一改，这样搜索引擎就会认为你是原创的了。

Last-minute, support searchs engine and live, the search engine regards as the stationmaster of parents of him back and belly, it is bubble is in free marsh cannot the person of extricate oneself, discharge wants free, the program wants free, the domain name also had better be free, should talk only receive fund, the fall out on the horse, but more acid is, want to search engine to change a bit a little only, or advertisement alliance money gives little, the clapperclaw that blot out the sky and cover up the earth began, as if the whole world is right only he is one.

归根究底，依靠搜索引擎而活，将搜索引擎当作自己衣食父母的站长，都是泡在免费沼泽里不能自拔的人，流量要免费的，程序要免费的，域名最好也是免费的，只要谈收钱，马上翻脸，但是更加讽刺的是，只要搜索引擎稍微有点变化，或者广告联盟钱给少了，铺天盖地的痛骂就开始了，仿佛全世界对的只有他一个。

The job of later period, basically have the following these: Analysis and observation---Effect of analysis of user search behavior, keyword is evaluated, observation of search engine expression, change rate analysis and evaluate, search engine has the action inside frank analysis, station analysis, UE analysis and revise, competitor analysis and monitor,, if be a side a few large and medium-sized the website is done optimize.

后期的工作，主要有以下这些：分析与观察---用户搜索行为分析、关键词效果评估、搜索引擎表现观测、转化率分析及评估、搜索引擎占有率分析、站内行为分析、UE分析及修改、竞争对手分析及监测、资源站群推进、对话SE 实际上，如果是帮一些大中型网站做优化。

Good case should be: The result that recreation searchs should be to resemble today the appearance of portal website, a lot of pictures, a lot of links; And medical treatment search may be organize a few very credible information well; Bring user experience to a new level again so, bring about an user likely to select different search engine, or leave him so already the search engine of be accustomed to sth.

理想的情况应该是：娱乐搜索的结果应该是像今天门户网站的样子，很多图片，很多链接；而医疗搜索则可能是把一些很可信的信息很好地组织起来；这样就把用户体验又带到了一个新的层面，就有可能就导致用户选择不同的搜索引擎，或离开他原来已经习以为常的搜索引擎。

It's bell can reach over a meter in diameter.

它的身体最大可以达到直径1米多。

Now they are overdue and I shall have to pay a fine.

现在他们过期了，我不得不付罚款。