"N" is the number of all possible different authorization levels, each one associated with a locally valid service identity.
“n”是所有可能的不同授权级别的数量，每一个都关联一个本地有效服务身份。
To find out the relationship between soil microbial biomass C and N and soil fertility, soil microbial biomass C and N were compared in several types of soil with different fertilization levels.
通过对不同肥力水平黑土、棕壤、黄棕壤、红壤土壤微生物量碳氮的比较，研究和探讨土壤微生物量碳氮与土壤肥力的关系。
The chloroform fumigation-incubation method was used to measure the biomass-C and-N of soils with different fertility levels.
应用氯仿熏蒸培养法测定不同肥力水平的土壤生物量-C和-N。
The results show that the different fertilization levels of N, P and K have the remarkable influence on growth quantity, yield of branch and leaf and taxol content of T.
结果表明，不同的氮、磷、钾施用水平对曼地亚红豆杉‘Hicksii’盆栽苗和田间栽培苗的生长量、枝叶产量和紫杉醇含量有显著影响，影响效应从大至小依次为氮、磷、钾。
The experiment was carried out to study the effects of different N and K fertilization levels on growth, development and yield of tomatoes in the greenhouse.
研究了不同的氮钾肥处理下日光温室番茄生长发育和产量的变化情况。
The effect of different N and P levels on yield under water stress were studied.
研究了在水分胁迫的条件下不同氮、磷组合对小麦生长发育的影响。
The effect of different N and P levels on yield under water stress were studied.
研究了在水分胁迫的条件下不同氮、磷组合对小麦生长发育的影响。
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