Analogically, selectivity of 95 % - 97 % were att ained with Lindlar catalyst poisoned by lead.以Lindlar催化剂合成芳樟醇,脱氢芳樟醇转化率为99%~100%, 合成芳樟醇选择性为95%~97%.In dreams we think analogically.梦作类比的思考....
A snowball knocked his hat off.一个雪球飞来把他的帽子打落在地。A snowball gathers as it goes on.雪球越滚越大.My best friends and I made snowmen and had snowball fights there.我和我最好的朋友在这里堆雪人打雪仗.Look at this traffic! I’m afraid we haven’t got a ...
正如1892年剧本的副标题所强调的,《凯瑟琳》是一部“爱尔兰戏剧”。"Kathleen" was, as its 1892 subtitle asserted, "An Irish Drama".“在那儿等着!”凯瑟琳站起身来,“不,我改主意了。跟我来。”"Wait there!" Kathryn rose. "No, on second thought, follow me."她决定拿自己了解的事实与凯瑟琳当面对证。She had d...