| 单词 | psychrometer |
| 释义 | psychrometer Meteorol.|-ˈɒmɪtə(r)|
[f. Gr. ψῡχρό-ς cold + -meter; lit. a measurer of cold, a low-temperature thermometer. Badly employed in current use.]
orig. A thermometer; now, An instrument for measuring the relative humidity of the air; a wet-and-dry-bulb thermometer; a kind of hygrometer.
1727–41Chambers Cycl., Psychrometer, an instrument for measuring the degree of coldness of the air; more usually called thermometer. 1838Encycl. Brit. (ed. 7) XVII. 533/2 Two thermometers are now mounted on the same scale, and the indications of the wet and dry bulbs seen at the same time. This instrument has been termed a psychrometer. 1876Davis Polaris Exp. ix. 219 In it were placed the standard thermometer, the wet and dry bulb psychrometers.
Hence psychroˈmetric, psychroˈmetrical adjs., of or pertaining to the psychrometer or to psychrometry; hygrometrical; psyˈchrometry, the ascertainment of the degree of humidity of the atmosphere by means of a psychrometer.
1864Webster, Psychrometrical instruments... Psychrometrical observations. Psychrometry. 1880Nature 4 Mar. 426/2 The values deduced..agree with the observed only with a psychrometric difference of 4°. |
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