| 单词 | nitrogen balance |
| 释义 | > as lemmasnitrogen balance nitrogen balance n. the relationship between the amounts of nitrogen entering and leaving a biological system; spec.: (a) Physiology the difference between the amounts of nitrogen taken in and excreted by an organism; (b) Soil Science the difference between the amount of nitrogen added to a soil (by fertilization, nitrogen fixation, etc.) and the amount removed (by cropping, leaching, denitrification, etc.). ΚΠ 1897 Science 24 Dec. 949/1 The administration of thyroid tablets was stopped, and..the nitrogen balance became positive immediately and the body weight increased rapidly. 1942 Science 31 July 97/1 Karraker has published reports on these and other phases of the nitrogen balance in soils since 1925. 1988 P. W. Kuchel et al. Schaum's Outl. Theory & Probl. Biochem. xv. 411 The amount of protein (or fixed nitrogen) we ingest determines the state of nitrogen balance. 1993 Appl. & Environmental Microbiol. 59 3026/1 Nitrogen fixation by free-living N2 fixers..makes a significant contribution to the nitrogen balance of desert grassland communities. < as lemmas |
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