所述提取物用链烷-环烷溶剂 以溶剂对提取物为（0.1～0.5）∶1的重量比预先进行稀释。

The extractive is diluted by the alkane-cycloparaffin solvent with weight ratio 1: (0.1-0.5).

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脱除环烷酸的方法一般可有化学萃取、 溶剂萃取、 吸收等。

Methods of the removal of naphthenic acid are chemical extraction, solvent extraction absorption, and so on.

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一种无色、易燃的液体环烷烃，C5H 10，从石油中提取并用作溶剂和发动机燃料。

A colorless, flammable, liquid cycloalkane, C5H 10, derived from petroleum and used as a solvent and motor fuel.

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