液化低温英语cryogenic物质的膨胀比是指在一定量物质在其液体时体积,和其在室温、一大气压力下,气体时体积的比[1]

若封闭容器中装有液化物质,而有相当多的液体蒸发,所产生的压力可能会破坏压力容器。因此需使用泄压阀英语pressure relief valve排气阀英语vent valves[2]

液化或低温物质从其沸点到室温下的膨胀比为:

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