传统的缩酮化、酯化反应工业上多采用浓硫酸作催化剂.Traditional ketalization and esterification reactions are usually catalyzed by concentrated acid in industry.对甲苯磺酸铜是乙二醇与羰基化合物缩醛(酮)化反应的高效催化剂.Acetalization of glycol with carbonyl compounds was car...
Predatory pricing by large supermarkets was threatening the livelihood of smaller businesses.大型超市的掠夺性价格正威胁着小商店的生计。The company say they're able to keep pricing competitive.该公司说他们能够使定价保持竞争力。It's hard to maintain ...
出现了鼓舞人心的艺术复兴的迹象。There are encouraging signs of an artistic revival.它是人类复兴的象征, 取代了十字架的地位.It was the sign of the regeneration of the human race. It'superseded the Gross.艺术的历史就是复兴的历史.The history of art is the history o...
Large companies can easily buy out the shareholders of small companies.大公司可以很轻易地买下小分司的全部股份.The cash or scrip would be offered as part of a pro rata return of capital to shareholders.作为按比例资本收益的一部分，股票持有者将获得现金或股息凭证。The part...