机电专业英语试卷B答案.doc

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1、Answer of quiz 2. Translate the following words or phrases into Chinese or English.(210)1.普通车床 2.maintenance shop 3.点对点数控系统4.processing equipment5.自动更换刀具6. rotary-work 7.不管,不顾8.fragile workpiece9.位错密度10.grain growthII. Fill in the blanks with the suitable words or phrases given below.(36+2)1.be char

2、acterized as2.A wide variety of3.is heated to4.fill the cavity5.a later trimming process6.several specialized namesIII. Translate the Chinese parts given in the brackets into English.(410)1.Many of the larger lathes come equipped with attachments not commonly found in the ordinary shop2.When machini

3、ng a complex workpiece on a general-purpose lathe3.to move a tool or workpiece from one programmed point to another4.its computational capabilities have been substantially increased5.contributed significantly to6.filled with a dielectric fluid7.The high-power pulsed output is then applied to the too

4、ls and workpiece8.balanced by the dynamic softing processes of recovery and recrystallization. 9.without causing a change in dislocation densitybustionIV. Translate the following paragraphs. (20)普遍认同的对金属及合金热处理的定义是，以一定的方式加热和冷却固态金属或合金以达到一定的条件和/或获得某些性能。以热加工(如锻造)为目的的加热，不在此定义之列。同样地，有时用于生产诸如玻璃或塑料制品的热处理也不属于该定义的范畴。