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- Triisopropyl borate was synthesized with high yield from 2 propanol and boron oxide by using calcium hydride as drying agent to remove resultant water. 采用氢化钙作为脱水剂,以硼酐及异丙醇为原料合成了硼酸三异丙酯,该方法具有成本低、操作简便、条件温和、产率高的优点。
- Keywords ? 1 chloro 3 （1 naphthyloxy） 2 propanol;optical resolution;enzymatic esterification;lipase; 氯-3-（1-萘氧）-2-丙醇;光学拆分;酶促酯化;脂肪酶;
- Keywords Photodissociation dynamics;1 propanol;2 propanol; 光解动力学;正丙醇;异丙醇;
- Is the match on at 2 pm or 3 pm? 比赛是下午2时还是3时开始?
- If you subtract 3 from 5, you get 2. 五减去三就得二。
- The farmer paid 3 laborers to gather the crop. 农场主雇佣3名工人收割庄稼。
- These fish vary in weight from 3 lb to 5 lb. 这些鱼的重量从3磅到5磅不等。
- He lives 3 miles away from here. 他住在距离这里三英里的地方。
- I'm tied up in a meeting until 3 pm. 我开会直到下午三点钟方可脱身。
- Mr. and Mrs. Jones have 3 daughters. 仲斯夫妇有三个女儿。
- The beam has a thickness of 3 inches. 这根梁厚3英寸。
- The government hopes to hold salary increase to 3%. 政府希望将工次增长率控制在3%25。
- The horse racing is to be held at 3 p.m. tomorrow. 赛马比赛将于明天下午3点举行。
- We ordered 3 cases of soda for the party. 我们为晚会定购了三箱苏打水。
- Take Blue Bus No. 3 and transfer at Bundy to No. 2. 先坐三路蓝色公共汽车，到邦迪换二路。
- Above term only apply to dorsa above 3,000 bales. 以上条件，仅适用于三千捆以上的订单。
- The farmer paid 3 labourers to gather the crop. 农场主雇佣3名工人收割庄稼。
- His orchards bring in$3,000 a year. 他的果园每年获利3000美元。
- It's hard to make a card with 3 or 2 of heart. 很难用红桃3或2赢牌。
- Add 3 heaped teaspoons of sugar. 加满满的三匙糖。
