Sonic booms are measured in pounds per square foot of overpressure.
音爆是以每平方英尺的超压磅数来测量的。
A term used to describe the area covered by a given amount of powder, usually measured in "square meters per kilo" or "pounds per square foot".
一个描述给出单位粉末量的覆盖面积的术语，常用每公斤多少平米或每平方英寸多少磅表示。
The change in air pressure associated with a sonic boom is only a few pounds per square foot — about the same pressure change experienced riding an elevator down two or three floors.
和音爆有关的气压变化只有每平方英尺几磅——大约是坐电梯向下两到三层所感受到的气压变化。
The change in air pressure associated with a sonic boom is only a few pounds per square foot — about the same pressure change experienced riding an elevator down two or three floors.
和音爆有关的气压变化只有每平方英尺几磅——大约是坐电梯向下两到三层所感受到的气压变化。
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