A percussiondevice (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.
The utility model is composed of a percussiondevice 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。
3
Those who play, hit your vocal musical instrument (playing stringed instruments except) collectively referred to as percussion (device).