角度可调钻孔夹具
adjustable angular drill jig
鼻内内视镜造口术
intranasal endoscopic marsupialization
弹簧内夹盘前拉杆
front tension bar of internal chuck in spring
弹性内胀式夹具
Elastic expansion fixture
电火花小孔内圆磨床
small hole electrical discharge internal grinding machine
方头内孔输入传动
square female input drive
飞轮壳内孔
inner flywheel housing bore