percussionn.碰撞;打击乐器;[医]叩诊
percussion instrumentn.打击乐器
percussion well drill冲击式钻井机
percussion instnanent打击乐器
percussion cap copper雷管用铜合金
percussion rock drill冲击钻机
Percussion Fuze Impact击发信管弹着
percussion power press撞压机
percussion instruments打击乐器
percussion screw press直接电动螺旋锤,直接电动螺旋压力机
percussion arrangement击发装置,冲击机构