A pointed and threaded tool for drilling and boring that is secured in a brace, bitstock, or drill press.
通常是尖头有螺旋状图案并且可以更换,用在
柱
床上。
A pointed and threaded tool for drilling and boring that is secured in a brace, bitstock, or drill press.
通常是尖头有螺旋状图案并且可以更换,用在
柱
床上。
the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press .
机
切割部分;通常是尖头
有螺旋状图案并且可以更换,用在
柱
床上。
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