Twins and dislocation movement are two important deformation characteristics of silver nano powder under high pressure shock 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.

“冲击波是一种声波，它形成可以聚焦的压力，”Medispec公司的新产品开发总监吉尔哈姬姆说。

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Joints need cartilage for smooth movement and to absorb shock when you put pressure on a joint.

VOA: special.2010.05.19

Historically, it has taken some form of external shock or pressure from overseas, known as gaiatsu, to induce rapid and profound change in Japan (as a result of the 1970s oil shock, for example, Japan started liberalising its finance industry).

ECONOMIST: Japan has long hoped for a bit of inflation��but not this sort

It meets the highest standards of resistance to dust, sand, shock, vibrations, low pressure, high and low temperature, rain and long-term moisture.

FORBES: Extreme Cell Phones Get More So

Also, changes in the speed and pressure of the solar wind cause the termination shock to expand, contract and ripple.

BBC: Voyager impression (Nasa)