nitrogen phosphorus balance钒
Nitrogen Mass Balance氮质量平衡
nitrogen n balance氮平衡
apparent soil-nitrogen-balance rate土壤氮素表观平衡率
megative nitrogen balance负氮平衡
permeability nitrogen balance氮平衡
nitrogen transformations and balance氮转化与平衡
energy and nitrogen balance能氮平衡
The analysis of apparent nitrogen balance in the year-round greenhouse tomato cultivating system showed that apparent nitrogen loss increased with nitrogen supply level.
对日光温室番茄生产系统氮素平衡的分析表明，表观氮素损失随施氮量增加而升高，在总氮素供应水平处于200-800 kg·hm-2 N之间时，表观氮素损失量与总氮素供应水平呈正相关。
Based on the additional carbon skeleton of Ala compared to （NH4）SO4, these resulted suggested that carbon/nitrogen balance play a important role in the different regulation of the enzyme activity.
基于Ala碳骨架的存在,这些结果表明,碳/氮平衡是影响这些酶活性差别表达的主要原因。
参考来源 - 土壤中包膜肥料氮磷释放运移及作物吸怍利用Nitrogen balance, body weightand body mass index （BMI） were determined at day 1, 7, 14, 21.
观察记录体重、体重指数变化，测定氮平衡。
参考来源 - 持续早期肠内营养联合“护肠合剂”对重症急性胰腺炎患者的影响