The structural characteristics of the tools, operating principle and the field usage situation are introduced.

介绍了该工具的结构特点、工作原理及现场使用情况。

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Then it introduces the usage situation and problems of wetlands in China. At last, the author put forward some sustainable development countermeasures of protection and use.

湿地的利用状况，以及在利用中存在的主要问题与湿地危机，最后提出了应当大力加强湿地保护的一系列切实可行的重要措施。

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The paper discussed the modern artificial intelligent algorithms of reactive power optimization, summarized and analyzed the characteristics and usage situation of genetic algorithms.

探讨了求解无功优化的现代人工智能算法，总结分析了遗传算法的特点及使用情况。

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Yes, you can see the current situation of lots of cash, a low price-earnings multiple, name recognition, enterprise usage.

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