| 单词 | frost-point hygrometer |
| 释义 | frost-point hygrometer [`frȯst ´pȯint hī`gräm·ǝd·ǝr] ENGINEERING An instrument for measuring the frost point of the atmosphere; air under test is passed continuously across a polished surface whose temperature is adjusted so that a thin deposit of frost is formed which is in equilibrium with the air. |
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