Diglycol diacetate had been obtained with sulfuric acid or toluene - p - sulfonic acid as catalyst in lab.研究了在实验室条件下,以硫酸、对 甲苯 磺酸为催化剂合成二甘醇二醋酸酯的方法.The synthetic principle and the process method diglycol dioleate were discu...
The preliminary analysis hereinbelow will centre on the technical standard, the network organization and the DXC deployment.因此本文重点对天津电话网上应用SDH的 技术标准、原则 、 网路组织与DXC的配置等做一初步的分析....
亨德森听到这个消息一时目瞪口呆。Henderson was momentarily jolted by the news.亨德森一家很少去教堂做礼拜, 但他们笃信宗教.The Hendersons seldom go to church, but they believe.亨德森先生, 您在世上的步履太匆忙了 吧 ?Do you not rush through the world too hard, Mr. Henderson?...
每个学生都有导师指导他们写论文。Each student has a supervisor to advise on the writing of the dissertation.他正在写论文, 突然一阵头晕.He was writing his essay when, all of a sudden, he was seized with giddiness.我注意到大部分学者暑期都在写论文。I noticed that most ...
Sir Peter has held several senior military posts.彼得爵士担任过几个高级军事职务。You have to get eight wooden posts, and drive them into the ground...你得找来8根木桩，并把它们敲入地里。...one of the plushest posts in US diplomacy.美国外交界待遇最优厚的职位之一The post...
He touched the manila folder which Wainwright had put down.他按了按温赖特放下的马尼拉纸文件袋.The manila envelope was in Carolyn's stack, about a third of - the way down.那牛皮纸信封是在卡洛琳的一摞东西中, 不过压在下面大约 三分之一 处.Byron's eyes smarted; ...