The influence factors of diesel sootless additive formulation are varied, which are correlated and constrained mutually.

柴油消烟添加剂配方的影响因素较多，各因素既相互关联，又相互制约。

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At the same time, considering these two factors correlated with other factors that influence market return, there may be co-linearity in our regression equations if we ignore this phenomena.

同时，考虑到特质波动率和相关性这两个因素和一些影响市场收益率的因素相关，不加任何处理就引入定价模型，可能导致自变量之间的多重共线性。

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