the balance between the amount of nitrogen taken in (to the soil or the body) and the amount given off (lost or excreted)
双语例句
No adverse reaction was observed in both groups.Conclusions Ala-Gln-supplemented PN improved nitrogen balance and maintained intestinal permeability ,reduced complications. 结论添加谷氨酰胺的肠外营养可以维持肠粘膜通透性，进一步改善氮平衡，减少并发症。
Dietary fiber does not have significant effect on protein metabolism and nitrogen balance, but some fiber can decrease the absorption and availability of lipids and carbohydrates. 膳食纤维对于蛋白质代谢及氮平衡的影响不大，但可减少脂类和碳水化合物的吸收及利用。
