propellers螺旋辊propellern.螺旋桨；推进器=propellor.propeller-type flowmeter螺旋桨式流量计propeller push up distance推进器推进距离propeller shaft slip joint传动轴滑动接头propeller-turbine engine涡轮螺旋桨发动机propeller transverse force螺旋桨横向力propeller position transfer螺旋桨移位propeller-driven aircraft螺旋桨飞机propeller-driven airplane螺旋桨飞机propeller reduction gearbox螺旋桨减速器propeller balancing machine螺旋桨平衡试验机