然后通过大量实验筛选出两种有效添加剂环丁砜和六次甲基四胺.Following that, two effective additives - syclotersuphone and methenamine are found by series experiments.盐酸雷尼替丁与7, 7, 8, 8-四氰基对二次甲基苯醌荷移反应的研究.Study on the Charge - Transfer Reaction of Raniti...
He wasn't irritable or snappy or anything, just slightly perplexed.他并不是爱发火或爱起急什么的，他只是有点困惑。They were perplexed by her response.她的答复令他们困惑不解。The farmer felt the cow, went away, returned, sorely perplexed, always afraid...
The degradation or assimilation of fatty materials is often restricted because of their relative insolubility.脂肪物质因其溶解度低,分解作用和吸收作用常受限制.There's a lot of evidence that oily fish, as distinct from fatty meat, has a ben...