spark machine

• 电火花加工机

spark machine的用法和样例：

例句

1. A lead-screw is a common driving mechanism in machine tools, and it translates rotational motion to linear motion.Nowadays a ballscrew is usually used instead of a lead-screw.
   中文摘要导螺杆在机械加工机中为一常见驱动机构，其作用是将旋转运动转变为直线运动。