| 单词 | acid precipitation |
| 释义 | > as lemmasacid precipitation acid precipitation n. (a) Chemistry precipitation of a salt from solution caused by the addition or presence of acid; (b) rain, snow, etc., having increased acidity, esp. as a result of atmospheric pollution; cf. acid rain n. ΘΚΠ the world > the earth > weather and the atmosphere > weather > precipitation or atmospheric moisture > [noun] > with increased acidity acid precipitation1955 1899 Jrnl. Amer. Chem. Soc. 21 736 When the filtrate is precipitated by ammonia at the neutral point, any future precipitation caused by an excess of ammonia consists of or contains berberine, as a result of its incomplete removal by acid precipitation. 1939 W. E. Petersen Dairy Sci. li. 591 The principle of acid precipitation of casein has been discussed previously. 1955 Tellus 7 253/2 The principal features of the chart of Fig. I are: (a) the region of acid precipitation along the west coast. 1993 M. W. Klemens Amphibians & Reptiles Connecticut i. 6 Certain frogs and salamanders may be excluded from vernal pools that have been affected by acid precipitation. < as lemmas |
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