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- Keywords pervaporation;dehytration of isopropanol;condensed formaldehyde;PVA/PAN composite membrane; 渗透汽化;异丙醇脱水;缩甲醛;PVA/PAN复合膜;
- dehytration of isopropanol 异丙醇脱水
- The best concentration of isopropanol in the mobile phase is 1%. 流动相中异丙醇体积分数以1%25为最佳。
- After salt out process and regular distillation, the recycling purity of isopropanol can reach above 98%. 经盐析后,只需经普通蒸馏,异丙醇回收纯度即可达到98%25以上。
- After salt out process and regular distillation,the recycling purity of isopropanol can reach above 98%. 经盐析后,只需经普通蒸馏,异丙醇回收纯度即可达到98%25以上。
- The effects of adding glycol+K2SO4,glycol+KAc,and glycol+ZnCl2 as extractive agents on the reflux ratio and solvent ratio in the batch extractive distillation of isopropanol have been investigated. 采用间歇加盐的萃取方式,散堆玻璃填料塔,优化选取了回流比,溶剂比等相关工艺参数。
- How can I persuade you of my sincerity? 我如何能够让你相信我的诚意?
- There is a vein of melancholy in his character. 他的性格中有少许忧郁的气质。
- A bowl of hot chicken soup is good for you. 喝一碗热鸡汤对你有好处。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- This strain of wheat can grow during a cold spring. 这种小麦可以在寒冷的春天生长。
- Have a glass of beer to rinse your dinner down. 喝杯啤酒把你吃的晚饭冲下去。
- I bought a pair of tan leather shoes the other day. 前几天我买了双棕褐色的皮鞋。
- Your work falls short of my expectations. 你的工作未达到我的期望。
- He bit off a large piece of the apple. 他咬下一大块苹果。
- He emphasized the importance of careful driving. 他强调小心驾驶的重要性。
- I have a huge pile of letters to deal with. 我有一大堆信件要处理。
- He gave a description of what he had seen. 他描述了他所见到的一切。
- It is a fact of life and you must face it. 这是严酷的现实,你必须面对它。
- It is wrong of you to bully the child. 你不该欺侮那个孩子。