粘土矿物能催化脱羧基作用是早已认识到的问题.The ability of clay minerals to catalyse decarboxylation has long been recognised.这些部位包括羧基 、 羰基 、 环氧基和氨基等.These sites include, carboxyl, epoxy, amino and the like.结果表明,燕化公司研究院研制生产的YH -05 羧基丁苯胶乳各项性能指...
他们请求香港允许他们在那里入港停留。They had asked Hong Kong for permission to put into port there.你应该考虑将旅程分为几段，中途在机场旅馆稍作停留。You should consider breaking the journey with intermediate stopovers at airport hotels.人们总是渴望改善周遭环境，但是却不愿意改善自己，因此总...