多头蜗轮蜗杆传动机构
Transmission of Mul-ti-Head Worm and Worm Wheel
韩福瑞蜗旋机
Humphreys spiral concentrator
蜗轮蜗杆
gear worm
worm gear
Worm Wheel and Worm
Worm - wheel steering gear
worm wheel system
Worm-gear and worm
turbine endless screw
Worm-and-wheel gear
virtual prototype
worm-gear
蜗轮蜗杆机构
worm and worm wheel mechanism
Mechanism of worm and gear
worm gear connection