一、概述饱和水蒸气压与温度的关系,在湿度领域中有着极其重要的作用。饱和水蒸气压的定义为:水蒸气与水的平展表面共处于相平衡状态时的水蒸气压力,用(?)表示,它为温度的单值函数。湿度的其它表示方法,如混合比、绝对湿度、相对湿度、露点温度、体积比和重量比等以及它们之间的相互换算,均与(?)有密切的关系。长期以来,人们一直不断的提出饱和水蒸气压的测量或计算方法以及标准数据。1976年,Arnold Wexlev～1发表了基于IPTS-68的0～100℃温度区间的饱和水蒸气压表,此表已被广泛用于温度的测量和控制中。ASTM-D4230(83.89) 也规定使用此表。1989年国际 First, an overview of the relationship between saturated water vapor pressure and temperature, humidity in the area has an extremely important role. The saturated water vapor pressure is defined as the water vapor pressure at which the water vapor is in equilibrium with the water’s flat surface and is expressed as (?) As a single-valued function of temperature. Other representations of humidity, such as mixing ratio, absolute humidity, relative humidity, dew point temperature, volume ratio and weight ratio, etc., and their mutual conversion, are closely related with (?). For a long time, people have been constantly put forward saturated water vapor pressure measurement or calculation methods and standard data. In 1976, Arnold Wexlev ~ 1 published a saturated water vapor pressure gauge based on IPTS-68 at a temperature range of 0 to 100 ° C. This table has been widely used for temperature measurement and control. ASTM-D4230 (83.89) also stipulates the use of this table. International 1989