以下是引用简在2003-9-23 16:57:32的发言:
不害怕小孔机的尺寸精度保证不到吗?
不害怕小孔机钻时孔钻斜吗?
不害怕小孔机钻出的孔上大下小或上小下大吗? 简对小孔机不大了解吧?精度是可以肯定的;钻孔时是垂直向下的,所以不会斜;钻的孔是根据使用的电极铜管粗细决定的,300毫米的上下一样粗。
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