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。
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。
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)。
This paper analyzes the effect of the deformation of the conical surface of the sleeve and surface of the percussion body in a centrifugal self destroying device upon self destroying performance.
分析了离心自毁机构套座锥面和击发体表面的变形对自毁性能的影响。
Methods: the graded model of rats was set up by using the device of the improved fluid percussion model, then we observed the changes of brain tissue of rats.
方法：采用自行改进的液压冲击模型装置产生大鼠液压冲击脑外伤模型，对大鼠脑组织进行肉眼和光镜观察。
Methods: the graded model of rats was set up by using the device of the improved fluid percussion model, then we observed the changes of brain tissue of rats.
方法：采用自行改进的液压冲击模型装置产生大鼠液压冲击脑外伤模型，对大鼠脑组织进行肉眼和光镜观察。
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