过多的氮输入将导致陸域生态系氮饱和 (nitrogen saturation)(Aber et al. 1989)，使原本就是酸性的土壤更为酸化 (van Breemen et al.
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焦化蜡油经溶剂精制后，饱和烃含量提高10个百分点左右，氮含量明显降低。
Saturated hydrocarbons content of CGO been increased by about 10 percent points and the nitrogen content decreased significantly after solvent refining.
加氢精制反应对催化剂的脱硫、氮、氧，加氢饱和的活性要求更高。
The higher active catalyst of HDS, HDN and saturation hydrogenation is required.
运用三因素饱和最优设计与灰色局势评价方法，通过盆栽试验，研究了适合于科尔沁沙地土壤的冷地型草坪基肥的氮、磷、钾营养元素的配比方案。
The optimum combination program of N, P, and K in the basic fertilizer on the cold type turf was studied by using three factors saturated optimum design and gray game decision method.
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