丝杆螺母 meaning in Chinese

feed screw nut

The machine uses lead screw , nut and steel ball for position - limit design . it can adjust the assistant table quickly and accurately
本机采用丝杆螺母钢球限位设计，调整辅助台高度快速确实。
Directed by rack and guide rail which are fixed on the base , the traveling part of milling mechanism is drived by motor through feed change unit
同时，带动行走部分的大多是丝杆螺母机构，滚珠丝杆等，而光杆和齿条齿轮机构均为导向定位作用。