上次的
材料学干货分享(一)得到了很多同学的好评,涨粉速度显著增加,没想到这么被热捧哈。有同学反应内容太少不过瘾,那就再补上一刀。
with萌萌的眼神建议大家来一句:
so.
..Engineering materials may be further subdivided into: ①Metal ②Ceramics ③Composite ④Polymers, something like that
我个人很喜欢用may be,和我们广大低调奢华有气质的留德华很配哦。
虽然语言简单,但几个专业词汇很重要:
①金属材料②陶瓷材料③复合材料 ④聚合材料
提到金属了!这可是有60%的几率会被问及Metals and Metal Alloys,就算没被问到也可以先发制人:
Metals are elements that generally have good electrical and thermal conductivity. Many metals have high strength, high stiffness, and have good ductility.
有没有被自己帅到?一般来讲比较傲娇的审核官会问你具体是哪些金属,你顺坡爬就可以了,但也有一些奇葩的问你什么是superconductors,哪些金属可以转化为这个,如何转化。
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我一个学生目前还比较满意的答案是:Some metals, such as iron, cobalt and nickel, are magnetic. At low temperatures, some metals and intermetallic compounds become superconductors.
说白了,只要有“在极低的温度下,某些金属和金属化合物能转变成超导体。”这句就成了,至于是例如铁、钴还是镍,您任选吧。
What is the difference between an alloy and a pure metal?
这么没水平的问题也是会有的,我这边一个同样水平不高但还能过的去的参考答案是:
Pure metals are elements which come from a particular area of the periodic table. Examples of pure metals include copper in electrical wires and aluminum in cooking foil and beverage cans.(神呀!原谅我的英语吧!)
就这么多啦,下次继续。
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