nitrogenasen.[生化]固氮酶
nitrogenn.氮
nitrogen gas spring氮气弹簧
nitrogen starvation氮饥饿
nitrogen regulation氮调节
Nitrogen monooxidum一氧化氮
nitrogenous tankage含氮槽肥
nitrogen wastewater氨氮废水
nitrogen form ratios氮素形态配比
nitrogen-efficient氮高效
Nitrogen in absorbed吸附态氮
nitrogenous nutrient含氮养料