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- N butyl 2 ethoxy thioacridone was prepared from o chloro benzoic acid and p phenetidine by means of Ullman reaction,cyclization,N alkylation and sulfurization. 以邻氯苯甲酸和对乙氧基苯胺为原料,经过胺的苯基化、二芳胺的环化、N-烷基化、硫代化反应合成了N-丁基-2-乙氧基硫代吖啶酮。
- The synthesis of butyl，2－etheylhexyl，decyl and dodecyl methacrylates by ester interchange was studied.A suitable system of catalyst and inhibitor was obtained. 采用酯交换工艺，有机锡为催化剂，进行了甲基丙烯酸丁酯、甲基丙烯酸－2－乙基己酯、甲基丙烯酸正癸酯、甲基丙烯酸正十二醇酯等高碳烷基酯合成反应过程的研究。
- Will 2,000 dozens be enough for selling? 两千打够卖吗？
- The counselor bilked his clients out of$2 million. 那位顾问从他的顾客那里骗取了200万美元。
- Every afternoon the baby takes a nap for 2 hours. 每天下午宝宝都要睡两个小时。
- The gentamicin-poly(butyl cyanoacrylate) nanoparticles were prepared by emulsion polymerization and freeze drying. 用乳化聚合法制备庆大霉素聚氰基丙稀酸丁酯毫微球，经冷冻干燥制成冻干型注射剂。
- He added 2 gallons of fuel to his car. 他给汽车加了2加仑油。
- She demonstrated that 2 and 2 are four. 她证明2加2等于四。
- If you subtract 2 from 8, you get 6. 8减去2是6。
- The book will run to nearly 2,000 pages. 这本书将厚达两千页之多。
- The bridge is almost 2 kilometers long. 这座桥差不多有两公里长。
- The compound butyl rubber is calendered. 将混制成的丁基橡胶进行精压。
- The diameter of the tree-trunk is about 2 meters. 这树干的直径大约是2米。
- No BCA invasion to the facial nerve was observed. 在1991到1993三年之间，本院?集了七例腮线的基底细胞腺瘤。
- This fossil may be over 2 million years old. 这化石可能超过二百万年了。
- The bridge is almost 2 kilometres long. 这座桥差不多有两公里长。
- To bring a butyl group into(a compound). 丁基化将丁基组引入（某化合物）
- The doors were numbered 2,4, 6 and 8. 这些门编为2、 4、 6、 8号。
- A lamb with 2 tails is a freak of nature. 有两条尾巴的小羊是畸形的。
- He condensed his report from 2,000 words to 1,000. 他将报告从两千字压缩到一千字。
