英语语法分析

Under these conditions, the yield of butyraldehyde glycol acetal is 71.1%.

在此反应条件下，丁醛乙二醇缩醛的收率可达71.1%。

Preparation process of 4,4,4-trihalogen butyraldehyde, trihalogen acid and their derivative.

一种制备4，4，4-三卤丁醛、酸及其衍生物的新方法。

Butyraldehyde glycol acetal was synthesized from butyraldehyde and glycol by using iodine as catalyst.

以单质碘为催化剂，通过丁醛和乙二醇反应合成了丁醛乙二醇缩醛。