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。
Aluminum, which weighs about 169 pounds per cubic foot, could theoretically be substituted for copper.
铝，重约169磅每立方英尺，理论上可以替代铜。
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。
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。
Approximately 2 to 3 pounds of meat may be packed per cubic foot of freezer space.
制冷空间中每立方英尺可储存包装好的约2 ~3磅的进一步的加工肉。
Approximately 2 to 3 pounds of meat may be packed per cubic foot of freezer space.
制冷空间中每立方英尺可储存包装好的约2 ~3磅的进一步的加工肉。
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