Twins and dislocation movement are two important deformation characteristics of silver nano powder under high pressureshock wave.
孪晶和位错运动是纳米银在超高压冲压波作用下形变的两个重要特征。
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Shock waves are just a particular kind of pressure wave - which is what sound itself comprises.
冲击波只是压力波的一种特定形式- 它是声音自身所包含的。
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"Shock waves are acoustic waves that create pressure that can be focused," says Medispec's Gil Hakim, the company's director of new product development.