单词 | nitrogen balance |
释义 | nitrogen balancenoun 1 Physiology the difference between the amounts of nitrogen taken in and excreted by an organism. 2 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.). OriginLate 19th century; earliest use found in Science. |
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