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- HMQ-A was purified by recrystal repeatly and the structure was confirmed as aporphines alkaloid taspine by melting point, qualitative reaction, UV and IR. 实验中通过反复重结晶对HMQ-A进行纯化，并通过熔点测定、定性反应、UV，IR等方法进行了结构分析，初步确定HMQ-A为阿朴菲类生物碱塔斯品碱。
- 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。
- 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?
- This will cause qualitative change. 这将会引起质的变化。
- The medicine produced a violent reaction. 这药物引起了剧烈的反应。
- We can draw a few qualitative conclusions. 我们可以得出一些定性的结论。
- My reaction will be to partake in the speech competition. 我的看法倒是要参加这次演说比赛。
- What was his reaction to the news? 他对这消息的反应如何？
- Are there qualitative standards for such training? 培养人才有没有质量标准呢?
- His reaction of swiftness surprised us. 他快速的反应能力让我们吃了一惊。
- I had a bad reaction after my typhoid injection. 我注射了伤寒针剂后产生了不良反应。
- This will cause qualitative changes . 这将会引起质的变化。
