dioxaphosphorinane oxide 基本例句 合成 This paper presents a new route to prepare magnesium oxide whiskers.探讨了一种合成氧化镁晶须的新的工艺方法。 Recent advances in preparation of ethylene glycol via ethylene oxide catalytic reaction are reviewed in this paper.摘要对环氧乙烷催化法合成乙二醇研究的最新进展作了综述。