Meanwhile, acetone was a polymerization inhibitor in preventing the self - polymerization ofp - methoxybenzyl chloride, and 11.同时探索了甲氧基苄氯自聚的阻聚剂, 初选的阻聚剂丙酮可使甲氧 基苄 氯粗品的收率提高11....
巨杉树的用途是什么?What is the purpose of the giant sequoia tree?它们和妈妈住在一堆沙丘里, 在一棵巨杉树的根下面.They lived with their mother in a sand - bank, underneath the root of a very big fir - tree....
On TV Omnibus and Young People's Concerts , he demystified serious music, making it exciting and fun.他在电视上通过“集锦 ” “青年音乐会”等节目, 使“严肃”音乐变得富有刺激性和逸趣横生,不再神秘....
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....