boll screw

• 滚珠丝杠

boll screw的用法和样例：

例句

1. The ball screw of evry axis is of high precision and is preloaded,sothe movement of the three axis is high in stability.
   各轴丝杠为精密滚珠丝杠副，且经过了预紧，雕刻运动平稳刚性好。