胺能参加与卤代烷的亲核取代反应.Amines can engage in nucleophile substitution reaction with alky.这个反应称为Hofman消除反应, 它很像卤代烷的脱卤化氢反应.This reaction, called the Hofman elimination, is quite analogous to the dehydrohalogenation of an alkyl hal...
Cook a Polynesian feast or an ancient Roman banquet.做一桌波里尼西亚宴席或古罗马盛宴.The term taboo derives from various Polynesian languages where it has the sense of'forbiden '.禁忌这个词来自各种波希米亚语,在波希米亚语中,禁忌这个词有着“禁止 ” 的含义.We were...
她撕下两格纸巾，然后纵向对折。She tore off two sections of paper towel and folded them lengthwise.剥掉洋葱皮并把它纵向切成两半。Peel the onion and cut it in half lengthwise.把茄子纵向切成两半。Cut the aubergines in half lengthways....
马尾毛轮: 打磨平滑擦色.Horse hair brush: buffing, smoothing and brush off.本文叙述了毛条在在染色中的匹尾毛和在精梳中下脚毛的开发利用.The article describes developping and using of tail - end wool in dyeing and wasty wool in combing.侯店毛笔的主要原料是动物的毫毛和尾毛.Hou shop...
Sensitized and challenged animals had significantly increased AR to aerosolized methacholine compared with control animals.激发致敏后的动物雾化吸入乙酰胆碱后较对照组有显著的气道反应性增高.Objective To study the expression of � � 3 adrenoceptor ( � � 3 ...