?双弯曲轴

... two-terminal pair network 二端对网络 two-throw crankshaft 双弯曲轴 two-throw pump 双吸泵 ...

?双拐曲轴

... two throw crankshaft 双弯曲柄 two-throw crankshaft 双拐曲轴; 双弯曲轴 three-throw 三曲柄的; 三通的 ...