Many groups can be added by nucleophilic substitution on a diazonium salt.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.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....
请于今日将随函附上的捐款表格用所提供的邮资预付的信封寄回。Return the enclosed Donation Form today in the prepaid envelope provided.要了解这些产品的详细信息,请寄来标明HB/FF字样的明信片。For more details about these products, send a postcard marked HB/FF.他去年把这些文件寄给了法国记者。Last...
None is of freedom or of life deserving unless he daily conquers it anew . ( Erasmus )只有每天再度战胜生活并夺取自由的人,才配享受生活或自由. ( 伊拉斯漠 )Erasmus, his chief bookkeeper , waited uncertainly just beyond the entryway.他的总管伊拉玛正在入口通道内不安地等著他....