Most direct substitution of groups bound to an aromatic nucleus is limited to diazonium salts.大多数连于芳核能被直接取代的基团仅限于重氮盐.Severe steric effects at the reactive carbon would impede the substitution.大的立体效应阻止在碳上的取代.We use saccha...
Much of this tradition derives from the pagan festival of Beltane.这个传统更多地来源于异教节日——五朔节.France derives 16% of revenue from air freight.法国 16%的岁入来自航空货运。The word Easter derives from Eostre, the pagan goddess of spring.Easter...
The extravagant brand is strata consumer goods secondly, as far as sociology significance be concerned.其次, 就实会学意义而言,奢侈品牌是上层的消费品.Due to this, the phenomenon also has arosen widely attention of domestic sociology scholars....
有时这些碳棒包上一层铜,以增加其导电性.Sometimes the carbon rods are copper coated to improve electrical conductivity.它们在超导性和普通导电性的临界线上操作, 产生巨大的放大效果.Operating on the borderline of superconductivity and ordinary conductivity, they produce i...
另一位著名的低音提琴演奏家罗恩·卡特改编了这些歌曲。The songs were arranged by another well-known bass player, Ron Carter.比恩卡我也是要到你的尊寓去的, 凯西奥. 什麽!Bianca. And I was going to your lodging, Cassio.比恩卡 让魔鬼跟他的老娘钉著你吧!Bianca. Let the devil and his dam h...