Poly ( vinyl alcohol ) has been protected against radiation by benzalation and benzoylation.聚乙烯醇 的耐辐解可通地苄叉化和苯甲酰化提高.Poly 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.M...
He cackled his disapproval.他唠唠叨叨地表示反对.They all cackled with delight.他们都高兴得嘎嘎地笑。The old lady cackled, pleased to have produced so dramatic a reaction...看到引起如此大的反应,老太太高兴得咯咯笑了起来。Newington threw his head back and cackled wit...
He wore brown corduroy pants and a white cotton shirt.他身着棕色灯芯绒裤子和白色棉衬衫。He wore an ill-fitting green corduroy suit.他穿了件很不合身的绿色灯芯绒西装。Nicholas was wearing a corduroy jacket.尼古拉斯穿着一件灯芯绒夹克衫....