短语词组短語Lead of screw 螺鏇導程hydrostatic lead -screw 液靜壓導螺杆lead protection screw tester 絲杆檢查儀lead -screw grinding 絲杠螺紋磨削lead protection screw 導螺杆lead 1 screw 導螺杆lead of screw thread 螺紋導程 返回 lead screw