A percussion device (7) gives impact pulses to a waveguide (21), where a compression stress wave and a reflected tensile stress wave are generated, which propagate in the waveguide.

冲击设备(7)向波导(21)提供撞击脉冲，在波导中产生压缩应力波和反射的拉伸应力波，应力波在波导中传播。

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The utility model is composed of a percussion device body, a piston, a percussion spring, a limiting pin, a shutter, a shutter torsion spring, a shutter pin, a torsion spring pin, etc.

它由击发器体、活塞、击发簧、限位销、活门、活门扭簧、活门销、扭簧销等部件组成。

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Those who play, hit your vocal musical instrument (playing stringed instruments except) collectively referred to as percussion (device).

凡用打、击方式发声的乐器(打弦乐器除外)统称为打击乐(器)。

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