一、检验中所需的湿度标准 在检验湿度计时必须具备一定湿度的环境气体和能够校准环境气体湿度的标准湿度计。 具有一定湿度的环境气体的调制方法有如下几种: (1) 改变潮湿空气的压力和温度; (2) 分别测量乾燥空气和被水蒸气饱 First, the humidity required for the test Humidity in the test must have a certain degree of humidity of the ambient gas and can calibrate the humidity of the standard gas hygrometer. There are several ways to modulate the ambient gas with a certain humidity: (1) to change the pressure and temperature of moist air; (2) to measure the dry air and saturated with water vapor