英语翻译1.Mechanical design means the design of things and syste

英语翻译
1.Mechanical design means the design of things and systems of a mechanical nature-machines,products ,structures ,devices ,and instruments.
For the most part mechanical design utilizes mathematics ,the materials sciences ,and the engineering-mechanics sciences.
2.The total design process is of interest to us .How does it begin?Does the engineer simply sit down at his or her desk with a blank sneer of control the decisions which have to be made?Finally,how does this design process end?
3.Sometimes ,but not always ,design begins when an engineer recognizes a need and decides to do something about it.
Recognition of the need and phrasing it in so many words often constitute a highly creative act because the need may be only a vague discontent ,a feeling of uneasiness ,or a sensing that something is not right.
4.The need is usually not evident at all ,for example ,the need to do something about a food-packaging machine may be indicated by the noise level ,by the variations in package weight ,and by slight but perceptible variations in the quality of the packaging or wrap.
5.There is a distinct difference between the statement of the need and the identification of the problem which follows this statement.
The problem is more specific .If the need is for cleaner air,the problem might be that of reducing the dust discharge from power-plant attacks ,or reducing the quantity of the irritants form automotive exhausts.

1、机械设计是指设计机械的系统性能,包括机械、产品、结构、装置和仪表.机械设计中经常应用到数学,材料科学和工程机械方面的专业知识.
2、对我们来说,整个设计过程都是非常有趣的.怎样开始一个设计?是不是一个工程师面无表情地坐在办公桌前做一个个决定,然后就完成整个设计?最终这个设计过程是怎样结束的?
3、有时侯是这样,但并非所有设计过程都如出一辙.当一个工程师认为需要某些东西,并动手为这个需要做些工作时,设计就开始了.
明确地辨别出需要的东西,再用诸多文字表述出来就是一种极大的创造力.因为,你需要的东西可能只是模糊的感觉而已,可能是一种不安,或者一些类似的错误的感觉.
4、所感知的需要通常是不明显的,比如你觉得需要一台食品包装机.这一感知可能来自于包装时的噪音较大,也可能是计量不精确,或者是包装物质量不稳定等,这些因素的存在让你觉得你需要一台包装机来解决它们.
5、对需求的描述和对上述问题的辨识是明显不同的.问题比需求更具体.比如,如果你的需求是净化空气,那么,存在的问题可能是去减少电厂烟尘排放或汽车尾气排放量.
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好像是六级阅读理解题,比较难翻译的.大体讲的是机械设计是由需要而引起,需要的产生是因为问题的存在.问题的界定和需要的定义又不相同……
我的理解是这样,