If you have a sound pressure meter, you can take the two readings.

如果你有一个音压的测量器，你可以读到两个数据。

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Protection of ear to reduce sound pressure on it is necessary if the ear is to be subjected to noise at a sound pressure level more than 85 decibels continuously.

如果耳朵要连续承受声压为85分贝以上的噪音，则必须加以保护，以减低它所承受的声压。

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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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Last summer, for the Glastonbury music festival in England, British phone carrier Orange produced T-shirts that used a so-called piezoelectric panel to convert sound pressure waves into electricity.

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