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.
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 N-layer platform structure is presented and discussed in detail, especially the key design pattern, some difficulties and the technical implementation method.
本文还重点介绍了该平台的N层体系架构，特别对其中的难点和关键的设计思想，及其实现的技术路线进行了详细的探讨和说明。
Using orthogonal design method, adopting L9 34 table, to research the synthesis of N-acetyl-L-leucine, for improving the productive rate.
采用正交设计法，选择L9（34）表，研究N-乙酰-L-亮氨酸的合成，提高反应得率。
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