名詞 psychrometer:

1. a hygrometer consisting of a dry-bulb thermometer and a wet-bulb thermometer; their difference indicates the dryness of the surrounding air

psy.chrom.e.ter

n.（名詞）
An instrument that uses the difference in readings between two thermometers, one having a wet bulb and the other having a dry bulb, to measure the moisture content or relative humidity of air.
干濕表，濕度計(jì)：一種測(cè)量空氣中含水量或相對(duì)濕度的儀器，通過(guò)兩支溫度計(jì)（一支為濕管另一支為干管）的讀數(shù)差得出結(jié)果