| 单词 | hygroscope |
| 例句 | The third is, the hygroscope, moving the punch, which shews the difference between the moistest and driest airs. The Introduction of Self-Registering Meteorological Instruments In this way a small area of the surface of the earth is converted into a hygroscope, and these test surfaces tell us whether the ground is cooled to the dew-point or not. Scientific American Supplement, No. 530, February 27, 1886 |
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