The yields of other cyclic acetals were between 62.并在此条件下合成了多种环缩醛,收率62.Eight acetals ( Ketals ) were synthesized under the optimal conditions.在最佳条件下,合成了八个缩醛 ( 酮 ) 化合物.The hydroxyl groups can be changed into esters , ethe...
The hydroxyl groups can be changed into esters , ethers , acetals and ketals, etc.最常用的羟基保护基可归纳为三类:酯类 、 醚类和缩醛或缩酮类.Eight acetals ( Ketals ) were synthesized under the optimal conditions.在最佳条件下,合成了八个缩醛 ( 酮 ) 化合物.The yields ...
她们所偷的传输器是给无人航空器的模型用的?The transmitter they stole was for a modern UAV?你们的无人航空器有可能遗失了 吗 ?Any chance of your modular UAVs is missing?我们已经开动了慢而水平低的星际航空器.We have already launched slow and modest interstellar spacecraft....
赫尔·施密特无疑是我见过的最让人作呕的人。Herr Schmidt is certainly the most odious man I have ever met.使他作呕的是, 他在花园里见到一只死狗.To his disgust, he saw a dead dog in his garden.任何成分都可能产生让人作呕的气味.Any one of them may produce a sickening odor....
We can do the work well only by mobilizing all positive factors.只有调动一切积极因素,我们才能做好这项工作.Global Development Finance 2005: Mobilizing Finance and Managing Vulnerability.世界银行发布《2005年全球发展金融》.The fear of war grew when the peopl...