英语语法分析

Tetrahydrothiophene was synthesized using iodine as a catalyst from 1,4-dichlorobutane and sodium sulfide.

以1，4-二氯丁烷和硫化钠为原料，碘为催化剂，乙醇为溶剂合成了四氢噻吩。

At present, domestic and foreign cities and towns gas commonly used agent for odorization tetrahydrothiophene (THT).

目前，国内外城镇燃气普遍采用的加臭剂为四氢噻吩(THT)。

Tetrahydrothiophene is the preferred Odorant in city gas. It is being used widely in market with the success of West-to-East gas Project.

四氢噻吩是城市燃气的首选加臭剂，随着我国西气东输等工程的建设成功，其市场前景广阔。