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====参考文献====
[[http://www.cnki.net/KCMS/detail/detail.aspx?QueryID=2&CurRec=1&recid=&filename=JQRR201006013&dbname=CJFD2010&dbcode=CJFQ&pr=&urlid=&yx=&uid=WEEvREcwSlJHSldTTGJhYkg1a2d3RjVIWDhMeUpnSkVIMi9pNUk0bzY5R3JDaWhySkdqMVlDRjVMb3Y0cG9VblpFST0=$9A4hF_YAuvQ5obgVAqNKPCYcEjKensW4IQMovwHtwkF4VYPoHbKxJw!!&v=MjMyODF6elpmTEc0SDlITXFZOUVaNFI4ZVgxTHV4WVM3RGgxVDNxVHJXTTFGckNVUkwrZmIrUm9GeURsV3J2Skw=]]