短語詞組短語diesel engine piston ring 柴油機活塞環(huán)diesel engine s piston 柴油機活塞diesel rotary piston engine 柴油轉子發(fā)動機diesel engine ' s piston 柴油機活塞rotary piston diesel engine 旋轉活塞柴油機opposed piston diesel engine 對動活塞柴油機;對沖活塞柴油機hydraulic free piston diesel engine 液壓自由活塞柴油機fydraulic free piston diesel engine 液壓自由活塞柴油機 返回 diesel engine piston