three throw crank pump 三缸曲柄泵 ; 三拐曲柄泵 ; 三缸曲轴弯曲部分泵

single-throw crank shaft 单拐曲轴 ; 单弯曲柄轴

three throw crank shaft 三连曲轴 ; 三拐曲轴

three throw crank-shaft 三连曲柄轴

double-throw crank-shaft 双弯曲轴

single throw crank shaft 单拐曲轴 ; 单拐曲柄轴 ; 单弯曲柄轴

two throw crank 以联曲柄 ; 双拐曲柄

three throw crank 三拐曲柄

two throw crank shaft 双联曲轴