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...
The fading reaction of DCB arsenazo with Cr 2 O 2 - 7 was studied.本文研究了DCB偶氮胂与Cr2O2-7的褪色反应.Cars were covered with clear-coat finish at the factory to protect the underlying paint from fading.工厂给汽车上了透明罩漆，以防底漆褪色。Hopes of a...
他这一笑, 是一种令人毛骨悚然的冷笑, 是一种表示默认的冷笑.It was in some strange way, a chilling smile, of assent.莎士比亚对于分歧并不是采取默认的态度.Shakespeare did not acquiesce in discrepancy.只有当他们无法找到低估品时,又会回到默认的方式——持有现金.Only when they cannot find bargains sho...