发布时间:2025-01-21 01:53:03
800*800=0.64个平方 34/0.64=53.125块 加损耗 34平的56块就可以了
线切割机床对丝的时候烧断了换上新丝以后走的实在太慢了而且火花很小这是怎么回事用旧丝干活的时
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