flat twist drill

• 扁麻花钻

flat twist drill的用法和样例：

例句

1. 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。
2. 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。