negative acid return 负压排酸解堵
In general, the higher the content of free fatty acid is, the lower the smoking point is. This paper establishes their relationship model by means of return analysis.
一般情况下，精制大豆油游离脂肪酸含量高，则烟点低，本文利用回归分析法建立了两者的关系模型。
Strive to the highest quality products and most considerate service to return the old and new customers in China's relentless support of tile acid …
力争用最优质的产品和最周到的服务来回报各新老客户对中国耐酸瓷砖的不懈支持…
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