active nitrogen

基本解释

Among those, conspicuous changes can be detected only in chlorophyll a, ammonia-nitrogen and active phosphorus.
除叶绿素、氨氮和磷酸盐浓度起伏较大外，其它因子在调查期间变化不明显。
The number of active hydrogen atoms attached to nitrogen atom of different classes of amine determine their effectiveness in extraction of metals by solvation.
根据与氮相连结的活性氢原子的多寡与有无，讨论了伯、仲、叔胺类溶剂化能力的强弱。
There were significant difference of genotypes on the mean nitrogen uptaking rate during active grain nitrogen uptaking period(NURmeanD) was different among genotypes.
最大灌浆速率持续期、活跃灌浆期、籽粒对氮活跃吸收期以及氮活跃吸收期内的平均吸氮速率在不同基因型间存在显著差异。