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- Vanillin 1,2-propylene glycol acetal was synthesized from Vanillin and 1,2-propylene glycol using ferri postassium sulfate as catalyst. 以铁钾盐加合物为催化剂,通过香兰素与1,2-丙二醇反应合成了香兰素1,2-丙二醇缩醛。
- Synthesis of vanillin 1,2-propylene glycol acetal by ferri postassium sulfate 硫酸铁钾盐加合物催化合成香兰素1,2-丙二醇缩醛
- Keywords vanillin 1;2-propylene glycol acetal;vanillin;1;2-propylene glycol;ferri postassium sulfate;acetalization; 香兰素1;2-丙二醇缩醛;香兰素;1;2-丙二醇;铁钾盐加合物;缩醛化;
- This city has a population of more than 1,000,000. 这个城市人口超过一百万。
- These socks retail at 1 dollar a pair. 这些袜子零卖一美圆一双。
- This mountain is 1,400 meters above sea level. 这座山海拔1,400米。
- These socks are going at 1 a pair. 这些短袜每双卖1英镑。
- The ratios of 1 to 5 and 20 to 100 are the same. 1与5之比和20与100之比相同。
- The thieves stole 1 million worth of jewellery. 窃贼偷走了价值100万英镑的珠宝。
- The winning time was 1 minute 5 seconds. 获胜的时间是1分零5秒。
- A unit of power equal to 1,000 watts. 千瓦功率的单位,等于1,000瓦。
- Of,relating to,or derived from vanilla or vanillin. 香子兰的,香草的香子兰的,与香子兰有关的,或从香子兰得来的
- Talking of salary you will be paid$1,000 a month. 说到薪水,你一个月1000美元。
- I was able to knock their price down to $1. 我把价格压到一美元。
- Our mail orders are now running at$1,200 a week. 我们现在邮购业务是每周期1,200美元。
- The ratio of students to teachers is 35:1. 学生和老师的比率是三十五比一。
- Their expenses reached a total of 1,000 pounds. 他们的花费总计一千英镑。
- You're allowed 1 litres of spirits duty-free. 你可免税带进1升烈性酒。
- I gave the beggar as much as 1,000 yen. 我给了这乞丐整整一千日元。
- The cinema nearby can seat 1,000 people. 附近那家电影院可容纳一千名观众。