whitecat79
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翻译基本上就是楼上那个,但是如果你这个是meterology的话,如果我没猜错的话应该是问,一部分空气在水分不变的情况下,上升和下降,哪些下列哪些数值不改变?但是要注意在大气之中,elevation的变化要使空气的温度和体积改变,但是其所具有的内能不变.vapor pressure and saturation vapor pressure和温度有关,所以以下根据定义,只有specific humidity是常数,如果温度和体积改变了变的话其他都要变.
回答:
1.Absolute humidity on a volume basis is the quantity of water in a particular volume of air.
2.Relative humidity is defined as the ratio of the partial pressure of water vapor (in a gaseous mixture of air and water vapor) to the saturated vapor pressure of water at a given temperature.
3.Specific humidity is the ratio of water vapor to air (including water vapor and dry air) in a particular mass.
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