The main formation condition and main trigger factor of landslides over the upper reaches of the Fujiang River were studied by the method Of relation degree analysis of GreySystem Theory.
采用灰色系统理论的关联度分析方法，研究了涪江上游滑坡的主要形成条件及触发因素。
During the extracting process, four main factors, namely solid: liquid ratio, immersing time, extraction temperature and extraction time were studied by using single factor analysis method.
在提取过程中，通过单因素法分析了几个主要因素：料液质量比、超声波提取功率及超声波提取时间对提取率的影响。
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