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- When stronger base NaOH was used, highly stereoselective products 2-acetyl-3-(Z-4-oxo-2-penten-2-yl)-5-methyl-cis-2,3-dihydrofuran (3) and 5 were obtained in the accelerated reaction with high yields. 反应改用氢氧化钠作碱;主要生成化合物5;同时得到2-(4-氧代-2-戊烯基)-3-芳基-4-乙酰基-5-甲基-反-2;3-二氢呋喃(3);并且反应速度明显加快.
- Vortices accelerate reaction rates of the unreacted region. 旋涡加速了未反应区的化学反应速率。
- The main momentum transfer mechanisms are via drag, lift, and acceleration reaction forces. 主要的动量转移机理是通过阻力,升力和加速的反作用力。
- Fiber sensing technique in microwave accelerated reaction system 微波消解仪中的光纤传感技术
- The heat causes the reaction to be accelerated. 热使反应加速。
- The car accelerated as it overtook me. 那辆汽车一加速就超越了我。
- Could I ask for your reaction to this policy? 我能问一下您对这个政策的反应吗?
- A reactor is a container for chemical reaction. 反应器是进行化学反应的容器。
- I'm displeased at your reaction. 我对你的反应很不满意。
- The forces of reaction made reform difficult. 反动势力给改革造成了困难。
- His reaction on this matter is unexpected. 没料到,他对这件事的反应是这样的。
- The car accelerated away and was soon just a speck on the horizon. 汽车加大油门开走了,不一会儿就消失在地平线上,看上去只有一个小点了。
- The heat accelerated the corruption of the dead body. 天热加速了死尸的腐烂。
- A sharp reaction; a repercussion. 强烈反应后果,影响
- Their reaction was one of qualified praise. 他们的反应是一种有保留的称赞。
- His initial reaction was one of shock. 他最初的反应是震惊。
- The reaction of the audience was instantaneous. 观众即刻有了反应。
- What was his reaction to the plan? 他对这个计划有什么反应?
- The medicine produced a violent reaction. 这药物引起了剧烈的反应。
- Determination of Trace Mercury in Chinese Herbal Medicine by ASF Method Using Microwave Accelerated Reaction System 微波消解-原子荧光光谱法测定中药材及中成药中的痕量汞