FAME products can be tracked directly at the pump什 ...? pls pay attention to those 2 sentences: 1: these long chained fatty acids (fatty acid methyl esters or fame) are most commonly between 16-20 carbons in length with a few exceptions. 2: fame products however do have a high percentage of oxygen which enables them to be tracked directly at the pump. in item 1, normal condition is 16-20 carbons chain, but excluding "a few exceptions" that means the sencond sentence: 脂肪酸确实有含氧量高的(时候), 但这在泵的地方就被发现了. maybe there is a bypass for the condition while detect the high percentage of oxygen.查看更多