许多基团可通过向得自胶的重氮盐作亲核取代而加以导入.Many groups can be added by nucleophilic substitution on a diazonium salt.大多数连于芳核能被直接取代的基团仅限于重氮盐.Most direct substitution of groups bound to an aromatic nucleus is limited to diazonium salts....
The kinetic process of reactive magnetron sputtering has been studied.研究了反应磁控溅射的动力学过程.The kinetic equation of acylation process fitted first order linear relation.酰化过程的动力学方程符合一级线性关系.kinetic friction动磨擦kinetic theory of m...
降落伞突然瘪了，他从300英尺的高空跌落到地面。He plunged 300ft to the ground when his parachute collapsed.当她把烟吸进肺里时，她的双颊瘪了下去。Her cheeks hollowed as she drew smoke into her lungs.碰撞时，汽车的前部和后部会被撞瘪。The front and rear of the car will crumple duri...
I am deeply indebted to my family for all their help.我深深感激我的家人给我的所有帮助。I am greatly indebted to you for your help.我非常感激你对我的帮助.I am deeply indebted to all the doctors and nurses who treated me.我深深地感激所有救治过我的医生和护士....