Under the selected factors and levels, nitrogen release quantity from the mature substrate of wetland was investigated by orthogonal experiments.
通过正交试验考察了成熟湿地基质在选定的影响因素及水平下的氮释放量。
Factors effect on corrosion resistance of LY12 aluminum alloy are studied thoroughly at edges and corners by orthogonal and single factor experiments.
通过正交实验和单个因素实验，对影响LY 12型铝合金棱角部位耐蚀性能的因素进行系统深入的研究。
Method: The effects of n, p, K and sowing norm were studied by means of 4 factors and 3 levels orthogonal design experiments.
方法：采用4因子3水平正交组合试验与单因素试验进行研究。
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