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� ...
He tries to resume work and then falls into the bobbins.他想接着干活儿,却一下子倒在筒上.Great loads of spooling, reduce the amounts of bobbins.大容量收线, 减少收线盘数量.Tom, this is Mary Bobbins . She's just come over from sales.汤姆, 这是玛丽·罗宾斯...