英语语法分析

Methylal is clear colorless volatile flammable liquid, chloroform and pungent odor.

甲缩醛为无色澄清易挥发可燃液体，有氯仿气味和刺激味。

Therefore, "GB17930-2013" gasoline vehicle specified in methylal not artificially added gasoline vehicle.

因此，GB17930-2013《车用汽油》中明确规定车用汽油中不得人为加入甲缩醛。

This paper also indicated that the yield of formaldehyde may be increased obviously by adding some water to methylal.

文中提出在原料中添加适量水可以显著提高甲醛收率。