Read Edit View history 有机氮 yǒujīdàn organic nitrogen Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 有机氮/有機氮 · yǒujīdàn · organic nitrogen 2026/03/04 有机氮 / 有機氮 yǒujīdàn organic nitrogen organic nitrogen 有机氮是衡量水质的重要指标。 created sense Mar 4, 2026, 02:25 AM