单词：double-point tool
double-point tool的用法和样例：
例句
- A single-point cutting tool is used to cutthreads on engine lathes.普通车床是用单刃刀具来车螺纹的。
- A single-point tool has only one cutting edge, while a multiple-point tool has two or more cutting edges.单刃刀具只有一个切削刃，而多刃刀具有两个或两个以上的切削刃。
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