The paper expatiated the character of drainage area water in China and the situation of pollution, the malpractice of existing fathering system and the method for solving the problem.
本文阐述了中国流域水的特点和污染的现状，现存治污制度的弊病以及解决的方法。
To such a situation, this text has put forward and fitted the reliability problem of solving structure system of method of the state function of limit through the artificial neural network.
针对这样的情况，本文提出了通过人工神经网络拟合极限状态函数的方法来解决结构系统的可靠性问题。
Finally, with the key technologies of Dalian Metropolitan Area Broadband situation, the paper gives the solving of key networking project of the education problem and the specific implementation plan.
最后，结合宽带城域网建设的关键技术和大连宽带城域网现状，给出该教育联网项目的关键问题解决及具体实施方案。
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