When the velocity of the rigid wall is zero, these formulas degenerate to that for the interaction of air shock wave with static rigid wall.

当刚壁速度为零时，这些公式退化成空气冲击波遇固壁相互作用的计算公式。

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The open-air explosion hazards are seismic effect, blasting individual flying rocks, blasting toxic gases, explosive air shock wave and noise hazards.

露天爆破的危害有爆破地震效应、爆破个别飞石、爆破有毒气体、爆炸空气冲击波和噪声等危害。

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Abstract: The open-air explosion hazards are seismic effect, blasting individual flying rocks, blasting toxic gases, explosive air shock wave and noise hazards.

摘要：露天爆破的危害有爆破地震效应、爆破个别飞石、爆破有毒气体、爆炸空气冲击波和噪声等危害。

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When people first immerse themselves in such frigid water, their bodies go into "cold shock, " and they start gasping for air, which puts a strain on the heart.

CNN: Are polar bear plunges good for you?

Since many goods cannot efficiently be moved by air, a long stoppage would have meant a huge supply shock.

ECONOMIST: The president and the dockers