膨胀螺栓 Traditional 膨脹螺栓 péng zhàng luó shuān 🔊 expansion bolt + Keep this word Meanings péng zhàng luó shuān 膨脹螺栓 expansion bolt Its characters 膨péngswollen胀zhàngto swell; to distend; to expandHSK 7–9螺luóspiral shell栓shuānbottle stopper