Piston and rod assembly向导轴承
piston top rod动力活塞顶杆
piston connecting rod unit活塞连杆组
piston push rod活塞推杆
piston and rod group活塞与连杆组件
piston tail rod活塞尾杆
double piston-rod双活塞杆
piston n rod活塞连杆;活塞杆
N(名词) the rod that connects the piston of a reciprocating steam engine to the crosshead 活塞杆