膨胀塞子 expanding stopper

膨胀塞卡环 expansion plug snap ring

油泵膨胀塞 oil pump expansion plug

活塞膨胀机 Piston Expander

膨胀塞 PLUG,EXPANSION

活塞胀圈 piston ring ; piston packing ring

活塞式膨胀机 reciprocating expansion-engine ; piston expansion engine ; piston expander

膨胀叶片型柱塞 expandable blade plunger

水缸活塞胀圈 bucket packing ring

同心活塞胀圆 concentric piston ring