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....
阿姆斯特朗拿不准自己的人生远景在何方。Armstrong is uncertain where his long-term future lies.他们对公司的远景不那么乐观。They are less sanguine about the company's long-term prospects.这家企业的远景极其美好.The enterprise has excellent prospects....