Copper - containing catalysts are the most suitable catalysts for producing 1, 2 - propanediol through catalytic hydrogenolysis of glycerol.对甘油催化氢解制取1, 2- 丙二醇效果最好的是含铜的催化剂....
Concord inaugurated a new era in airplane travel.协和飞机开创了空中旅行的新纪元.Much about this era and its dislocating technologies is good.许多关于这个时代及技术的变化都是有益的.The room had the elegance of a bygone era.这个房间有着旧时代的优雅.John Brahms was a G...
So trade between the two nations has been something of a one-way street, with Cuba deriving the benefit.所以在两国的双边贸易中可以说只有古巴从中受惠。Rather than deriving expressions for these surfaces let's justify the above remarks.我们不去...
卢西恩·弗洛伊德已受邀为女王画肖像画。Lucian Freud has been asked to paint a portrait of the Queen.“ 错了, 霍希姆 在乌克兰. ” 卢西恩说." Wrong ,'said Lucian, " Chochim is in Ukraine. "...
This collection of essays is edited by Ellen Knight.这本文集是由埃伦·奈特编选的。a medieval ballad about a knight and a lady一首关于骑士和贵族小姐的中世纪谣曲The knight carried a shield with a cross painted thereupon.骑士拿着绘着十字的盾牌....
贝萨妮会像她承诺的那样自愿回来吗？Would Bethany return of her own free will, as she had promised?我们承诺的就一定会兑现。We don'tpromise what we can't deliver.他们只收到了所承诺的钱数的一半.They had only received half the money promised....