随着水体总悬浮物含量的增加，总悬浮物中有机碳的质量分数呈对数趋势降低。
With the concentration of total suspended substances increasing, the quality partition of organic carbon in total suspended substance decreased in a logarithm tendency.
采用正交实验设计研究了反应温度、升温速率、二乙烯基苯的质量分数、裂解温度和保温时间五个因素对聚碳硅烷产率的影响。
Based on orthogonal design, the effects of reaction temperature, heating speed, weight percent of DVB, pyrolysis temperature and heat retaining time on the yield of PCS were discussed.
通过方差分析和回归性分析表明，不同林地之间有机碳、速效磷和速效钾质量分数差异性显著（P<0.05）且与土层厚度有明显相关性，并随土层深度的增加呈规律性变化。
And there is a significant correlation between the mass content of available P and soil depth (P<0.05) and the mass percentage of available P is verified regularly with the increasing of soil depth.
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