聚乙烯醇 的耐辐解可通地苄叉化和苯甲酰化提高.Poly ( vinyl alcohol ) has been protected against radiation by benzalation and benzoylation.聚乙烯醇的耐辐解可通过苄叉化和苯甲酰化提高.Poly alcohol has been protected against radiation by benzalation and benzoylation.即...
The smoke and fumes almost suffocated me.烟雾差点儿把我闷死了。They were suffocated as they slept.他们睡觉时窒息而死。The baby suffocated under its pillow.婴儿闷死在枕头下。Such a cool invigorating sky and he had such a broad chest, yet he felt suffo...