The cutting part of a drill usually pointed and threaded and is replaceable in a brace or bitstock or.

钻机的切割部分；通常是尖头的有螺旋状图案并且可以更换用在柱柄或上。

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The pointed end could of course be used as a drill, while the long blades on either side would cut trees or meat or scrape bark or skins.

那尖端的一边肯定可以当成钻头，而两边长长的锋利边缘则可以用来伐树割肉，或者刮树皮扒兽皮。

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It is pointed out that the high speed drilling by using the thick film CVD diamond drill is a good method to get high quality holes.

指出了采用厚膜CVD金刚石钻头进行高速钻削加工是获得高质量孔的良好方法。

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