twist drill
英
美
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Noun:
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a bit or drill having deep helical grooves
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用作名词 (n.)
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The mathematical model of the hyperboloid twist drill was introduced.
介绍了以旋转单叶双曲面作麻花钻钻尖后刀面的数学模型。
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A twist drill is designed to drill a hole which has a particular size.
麻花钻用来钻削具有一定尺寸的孔。
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