percussionn.碰撞;打击乐器;[医]叩诊
percussion on back叩背
Percussion driller冲击钻机
percussion welding贮能焊,冲桓接,冲击焊法,冲击焊,锻接,冲桓,储能焊
percussion flaking打击片解法
percussion section打击乐器组
percussion grindern.撞碎机
percussion movement捶击运动
percussion training敲击乐训练
percussion drainage叩打排痰法
percussion lock gun火帽簧板枪,铜帽簧板枪