Objective To study the catalytic activity of potassium bisulfate in synthesizing hexyl hexanoate.目的研究硫酸氢钾在合成己酸己酯工艺中的催化性能.Isoamyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸氢钾为催化剂,正丁酸和异戊醇为原料合...
Benzyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸氢钾为催化剂,丁酸和苄醇为原料合成丁酸苄酯.Isoamyl butyrate was synthesized by using potassium bisulfate as the catalyst.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.Ethyl lact...
I struck the ball cleanly and my shot was on target.我干脆利落地击球，命中了目标。Cut them off cleanly through the stem just below the node.就从茎节下面，沿茎干把它们全砍掉。The wounds may heal cleanly or they may ooze a clear liquid.这些伤口可能会利索地愈合，也可能会分...
科莱特和李站在他们的三层婚礼蛋糕旁.Colette and Lee pose by the three - tier wedding cake.尼科莱特: 只要我们付钱给过境处官员,就可马上获得入境签证.Nicolette: Well we can get entry visas straightaway if we pay the official.科莱特坚持认为奥黛丽?赫本是那部戏里女主角的最佳人选.Colette insisted...
A cluster of vultures crouched on the carcass of a dead buffalo.一群秃鹫蹲伏在一具野牛的尸体上。The vultures were already circling around the dead animal.兀鹰已经在绕着动物的尸体盘旋了.Vultures circled over a dead animal.秃鹫在动物尸体上空盘旋....