Asymmetric 1, 3 - dipolar cycloaddition can be strongly catalyzed by chiral oxazaborolidines.手性唑硼烷酮能够催化不对称1, 3偶极加成反应并取得很好的效果.The dipolar layer is consisted of the latent electrostatic image and toner attracted on it.这偶极层...
每晚你都会听见炼钢厂的下班哨声。Every night you could hear the whistles of the steel mill.夜晚炼钢厂的上空闪着暗红色的光.There was a dull red glow in the night sky above the steelworks.炼钢厂排放出的硫形成了酸雨。Sulfur emissions from steel mills become acid rain....
Way down in the valley to the west is the town of Freiburg.从这里往西远远的山谷中是弗赖堡镇。More preoperative antibody adsorptions were therefore needed in Freiburg than in Stockholm and Uppsala.因此,浮雷堡比斯德哥尔摩和乌普萨拉需要更多的术前抗体吸附....
Members of Parliament are spending the weekend canvassing opinion in their constituencies.国会议员这个周末要向所在选区的选民征求意见。The seniors organizations sent out mailings to their constituencies.老年人组织向各自的会员寄送了邮件。She is altogether too r...
Traditionally young Asians in Britain have gravitated towards medicine, law and engineering.英国的亚裔年轻人通常被吸引到医学、法律及工程专业。We all gravitated towards the food.我们全受食物吸引.In the 19 th century industry gravitated towards the north ...
保加利亚人认为浪费面包是无法赎回的罪过.When you eat bread in Bulgaria , don not waste any.所以, 研究开放式基金净赎回的变动规律及其对证券市场的影响便显得十分重要.Therefore, the research on the alteration rules of the Open - end fund redemption seems extremely important....