扭转活塞泵 rocking pintle piston pump ; rotary piston pump ; rotopiston pump

扭转活塞环 [动力] torsional piston ring

径向扭转活塞泵 rolling piston radial pump

扭转式柱塞泵 rotating plunger pump

双凸轮扭转活塞泵 twin lobe pump

扭转活塞泵联轴器 rocking pintle piston pump coupling

扭曲式活塞环 twist type piston ring

扭转柱塞泵 rotary plunger pump

扭转活塞式气表 rotary piston gas meter

扭转活塞式策念头 rotary piston engine