转动曲柄起动 crank up
转动曲柄摇动 cranking
曲柄转动装置 crank gear
转动双曲柄 rotating double crank
方向转动的曲柄 crossed parallelogram
用曲柄转动某物 Its pilot has to pedal hard to get it into the air ; There are thousands of cycle paths in Holland
曲面转动手柄 machine handle with sleeve
曲柄转动导杆机构 [机] crank and rotating guide-bar mechanism
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