樓主: xiaobing86203
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直徑0.01mm的鉆頭,,你們見過嗎,? |
點評
回復(fù)很中肯,。比如PCB板子,本身不導(dǎo)電,,談不上電火花加工,。再者放電加工效率相比切削效率低也是一方面。
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