以硫酸氢钾为催化剂,正丁酸和异戊醇为原料合成了正丁酸异戊酯.Isoamyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸高铈为催化剂,正丁酸和异戊醇为原料合成了正丁酸异戊酯.Isoamyl butyrate was synthesized by using ceric sulfate as the catalyst.以硫酸铈铵为催化剂,...
财富未必等同于幸福。Wealth is not necessarily synonymous with happiness.他认为成功等同于物质财富.He equates success with material wealth.该发言人强调这些措施并不等同于全面禁止.The spokesman stressed that the measures did not amount to an overall ban....
You're a blundering fool.你是一个大笨蛋。She came up to guide him when he was blundering away.他踉踉跄跄地离去时,她上前替他引路.But he was not for a single instant the dupe of her blundering alacrity.但是他一刻也不会上当去相信她这种冒冒失失的殷勤.You're a ...