relative humidity

汉语翻译

英语解释：

名词 relative humidity:

1. the ratio of the amount of water in the air at a give temperature to the maximum amount it could hold at that temperature; expressed as a percentage

例句：

1. 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