Any of several instruments that measure atmospheric humidity.
湿度计测量大气湿度的几种器具的任何一种
An instrument designed to indicate or control the relative humidity of the air.
恒湿器一种用于显示或控制空气中相对湿度的仪器
humidity is a measure of moisture in the atmosphere.
湿度是空气内含水分多少的量度.
