目的以对羟基苯甲醛为底物,通过微生物的转化作用生物合成天麻素.Aim To synthesize gastrodin via biotransformation of microorganism using p - hydroxybenzaldehyde as substrate.方法: 以甲醇为溶剂,以对羟基苯乙酮和溴为原料制备了α - 溴-4-苄氧苯基苯乙酮.Methods: α - Bromo - 4 - benzyloxy ac...
The sale is a big coup for the auction house.这笔交易是该拍卖行的一大成功之举。The airline plans to auction its international routes to former competitors.这家航空公司打算把他们的国际线路拍卖给以前的竞争对手。Thirteen per cent of Christie's coin and banknote ...
Skin can be preserved viably at 20℃ for 45 dyas but not longer than 60 days.作者认为应用本方法储存的皮肤应在45天内用完,最长不要超过60天.It passes mainly through the purple -- color soft sandrock and mudstone in Triassic or Dyas Systems.隧道主要通过三迭系、二...
男高音独唱者因病今晚不能演出.The tenor soloist is unable to appear tonight because of illness.那位独唱者过去从未在伦敦演出过.The soloist had never performed in London before.独唱者跟不上乐队.The soloist drags behind the orchestra....