sulfur trioxide
sulfur-trioxide的词性:n.(名词)
1. A corrosive compound, SO3, having three solid forms that may coexist in a given sample, used in the sulfonation of organic compounds. 三氧化硫:一种具有腐蚀性的化合物,SO3,有三种固态形式,可共同存在于给定的样品中,可用于有机化合物的磺化