石油酸中脂肪酸含量的增加，将显著升高石油酸酯的倾点。
High fatty acid contents in raw acids can raise the pour points of the esters remarkably.
介绍了ASTM D6749—02《石油产品倾点测定法(自动空气加压法)》的特点、概要及原理。
The features, outline and principle of ASTM D6749-02, petroleum product pour point determination (automatic air pressurization method), is explained in this paper.
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