screw bar

• 丝杠

screw bar的用法和样例：

例句

1. A feed screw extends from the base to the knee.
   进给丝杠从底座伸向升降台。
2. 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。