Real refrigerators actually work with liquids that go into gases so use the latent heat of the liquid, so it doesn't really work like the Joule-Thomson expansion. So this is real.
液体变成气体来工作，以运用液体的潜热，所以这不是，真正像焦耳-汤姆逊膨胀一样工作，这是真实的气体，不像焦耳。
PROFESSOR: Last few lectures, and we started to see some of the consequences and looked at simple changes, transformations of expansion and mixtures of liquids and gases.
教授：之前几节中，我们开始看到一些过程及结果，混合的简单的变化，关于气体，液体的扩散。
Because of the large expansion ratio of liquid to gas with cryogenic liquids, it is very important to provide adequate ventilation where cryogenic liquids are stored and used.
因为液体到气体的大膨胀率，为正在使用液氧的地方提供充分的通风非常重要。
As a general rule, solids can expand and contract too. But the coefficients of expansion and contraction of solids are on the whole smaller than those of liquids.
和固体、液体相区别的一种状态：相对低的密度和粘性，在相对高的扩张和压缩性。
As a general rule, solids can expand and contract too. But the coefficients of expansion and contraction of solids are on the whole smaller than those of liquids.
和固体、液体相区别的一种状态：相对低的密度和粘性，在相对高的扩张和压缩性。
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