最后是本文的研究意义、研究方法及技术路线。
综述了亚氨基二乙酸合成方法的研究现状，重点介绍了具有工业前景的合成路线及最新的研究结果。
The synthetic mothod of IDA is summarized. The mothod which has a good look in industry application is emphasized.
第1章提出论题，界定研究对象与范围并对相关研究及本文所采用的研究方法与技术路线加以介绍。
Chapter 1 raise the issue and define the objects and their scopes, and then, introduces the methods of research and the technical path.
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