短語詞組短語Piston and cylinder changeover 活塞和汽缸轉(zhuǎn)換piston ring cylinder wall 活塞環(huán)piston -cylinder liner 活塞piston and cylinder 活塞和汽缸piston type cylinder 柱塞式油缸piston rubbing cylinder 活塞拉缸 返回 piston cylinder