diffusion hygrometer的用法和樣例：
例句
- A humidity automatic control system with a hygrometer as the sensor for spectral instrument room was studied.
摘要研究了用濕度計作傳感器的濕度自動(dòng)控制系統。 - Attached to the thermometer at my home is a hygrometer, which can show the humidity in the room at any time.
我家的溫度計上還帶有濕度計，能夠隨時(shí)掌握室內的濕度。
