A pointed and threaded tool for drilling and boring that is secured in a brace, bitstock, or drill press.
通常是尖头的有螺旋状图案并且可以更换，用在
柱柄或
。
A pointed and threaded tool for drilling and boring that is secured in a brace, bitstock, or drill press.
通常是尖头的有螺旋状图案并且可以更换，用在柱柄或。
声明：以
例
、词性分类均
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