In high - precision calculating moist air properties, calculation model of the water vapor saturation curve of moist air is the key.

湿空气物性的高精度计算中，饱和水蒸汽曲线的计算建模是关键所在。

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Relative humidity, a percentage, is the ratio between the water vapor present and the air's saturation point, a figure that changes with the temperature.

相对湿度，是空气中绝对湿度与饱和湿度的比值，它随着温度变化。

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When air is cooled to a point at which the air's capacity to hold more water vapor is zero, saturation is reached.

当空气进一步冷却到容纳更多水汽的能力为零(的那一点)时，饱和状态就达到了。

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Absolute humidity, on the other hand, refers to the actual amount of water vapor in the air regardless of saturation.

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