英语语法分析

Ultrafine WO_3 powders were prepared by colloidal chemical method using sodium tungstate, hydrochloric acid and palmityl trimethyl ammonium bromide as starting materials.

本文以钨酸钠、盐酸和十六烷基三甲基溴化铵为原料，采用胶溶法制备了WO_3超细粉体。