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...
顾客付费后登录系统和其他用户聊天。Customers pay to log on and gossip with other users.请登录我们的网站www.cobuild.collins.co.uk查看。Check out our website at www.cobuild.collins.co.uk.登录哈默网络联盟，就会找到另外12个专门播放恐怖电影的网站。Log on to the Hammer Web ring, wit...
parlous state危险的状态But the parlous state of the world economy demands nothing less.但是世界经济的危机要求的会更多.There have five rooms two parlous and two toilets.在那里有五个房间二危险的和二厕所....the parlous state of our economy.我们经济的严峻形势She is par...
It isn't always easy to separate the wheat from the chaff.分清良莠并不总是很容易。An old bird is not to be caught with chaff.谷壳捉不到老鸟.Old birds are not to be caught with chaff.有经验的人不易受骗上当....