每个公司要的钻头的形式有区别，长度、螺旋角等各不相同。

Every customer has difference in the type of drill bits, such as length, helical angle and others.

youdao

每个公司要的钻头的形式有区别，长度、螺旋角等各不相同。

Every customer has difference in the type of drill bits, such as length, helical angle and others.

youdao