那是布鲁塞尔国际贸易谈判中纷乱的一天。It's been a tumultuous day at the international trade negotiations in Brussels.随着最后期限的临近,她开始心绪纷乱,不知所措。As the deadline approached she experienced a bewildering array of emotions.纷乱的情绪让我心力交瘁。My emot...
另外, 还讨论了苯甲醚类 、 二联苯恶二唑类、联苯胺类与 氮杂 类等新型双恶唑啉配体的合成.Besides, the synthesis of diphenyl ether, diphenyl oxadiazole diphenyl amine and aza - bis ( oxazolines ) is also discussed.以3,3′-二氨基联苯胺为显色剂, 研究了分光光度法测定有机物中的微量元素硒.Using 3,3� ...