本文简要介绍微波大气湿度探测的基本原理，阐述了微波湿度计的系统构成及工作原理；描述了微波湿度计的性能指标要求。

The basic principle of atmospheric humidity sounding by microwave radiometer and the technical specifications of MWHS onboard FY-3 satellite are briefly introduced in this paper.

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这一性质被用于人们所熟知的自记湿度计中。

This property is used in the well known hygrograph.

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湿度计：量度大气湿度的仪器。

Hygrometer: An instrument for the measurement of the humidity of the atmosphere.

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