机电专业英语试卷B答案.doc

Answer of quiz 2. Translate the following words or phrases into Chinese or English.(2×10)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.(3×6+2)1.be characterized 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.(4×10)1.Many of the larger lathes come equipped with attachments not commonly found in the ordinary shop2.When machining 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 tools 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。