Colligative properties are the properties like the vapor pressure, lowering when you have a mixture in a liquid, instead of having a pure substance you have amixture of substances here.
依数现象是这样一种现象,当你把物质混合在一起的时候,你不会得到纯物质,而是得到混合物质。
Because this gas liquid coexistence line, this diagram, and this Clapeyron equation, is all done for a pure substance.
因为这个共存曲线，相图和克拉珀龙方程，都是对纯物质得到的。
This pure liquid hydrogen is a highly artificial substance.
而这种液态纯氢是一种极难获取的物质。
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