Cucurbituril is a macrocyclic cavitand compound with two portals.葫芦脲是一种具有大环空腔、两端开口的葫芦状分子.All these novel macrocyclic compounds were confirmed with elemental analysis, IR, 1 HNMR and MS.这些新型大环化合物均经元素分析 、 IR 、 1HNMR、MS等证实其...
The pull-out of the army paves the way for independence.军队的撤出为独立铺平了道路。A racing injury forced Stephen Roche to pull out.一次比赛中的受伤使斯蒂芬·罗奇不得不退出。The militia in Lebanon has agreed to pull out of Beirut.黎巴嫩的民兵组织已经同意从贝鲁特撤出。...
Practise mental arithmetic when you go out shopping...外出购物的时候练习一下心算。We should increase production and practise strict economy.我们应当增加生产, 厉行节约。You should practise as well as preach, Mr. Arabin.你应该既讲道理又实践, 阿拉宾先生.He ought to...
主铬铁岩矿层及麦仑斯基矿层出露不好.The Main Chromitite Seam and the Merensky Reef do not outcrop well.斜长岩组中的矿层仅断续出露.Seams in the anorthosite series are only intermittently exposed.在穆斯科克斯杂岩体中,铬铁矿矿层仅产于长石质橄榄岩中.The chromite deposits in the M...
坞站装有磁盘驱动器 、 视频电路和特殊插座的机箱,其设计是用于装入便携机.Docking station A cabinet containing disk drives, video circuits, and special receptacles designed houseportable computer....
这张快照印出来不太清楚.This snapshot hasn't printed very well.摄影师给他拍了一张很棒的快照.The photographer snapped a nice photograph of him.她在小男孩拉小提琴时给他拍了一张快照.She snapped the boy when he was playing the violin....