“spectral hygrometer”的概念、定义、翻译、参考文献-科学参考

单词	spectral hygrometer
释义	spectral hygrometer [`spek·trǝl hī`gräm·ǝd·ǝr] ^ENGINEERING A hygrometer which determines the amount of precipitable moisture in a given region of the atmosphere by measuring the attenuation of radiant energy caused by the absorption bands of water vapor; the instrument consists of a collimated energy source, separated by the region under investigation and a detector which is sensitive to those frequencies that correspond to the absorption bands of water vapor.
随便看	toolhead tooling underplate underpunch underream undersaturated undersaturated fluid undersea mining undershoot undershot wheel undersize underspin understory understressing underthrow distortion underthrust undertow undervoltage protection undervoltage relay underwater acoustics underwater burst step attenuator step bearing step block step brazing

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