To make a transducer by painstakingly micro-machining a brittle block of ceramic material can take many hours of work, though.
但是制造一个换能器需要利用微机械技术，在一块质地脆硬的陶瓷材料上精心加工，耗费数个小时才能完成。
The removal of material from a workpiece is termed generation of form by machining , or simply machining.
从工件上切除材料被称为机加工成型阶段，或者简称为加工。
Based on the results of experiment, the suitable tool material and machining parameters are confirmed.
根据试验结果，确定适合加工该型号高强度钢的刀具材料和切削用量。
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