humidity meter的用法和样例：
例句
- Attached to the thermometer at my home is a hygrometer, which can show the humidity in the room at any time.
我家的温度计上还带有湿度计，能够随时掌握室内的湿度。 - A humidity automatic control system with a hygrometer as the sensor for spectral instrument room was studied.
摘要研究了用湿度计作传感器的湿度自动控制系统。
