同时辨识模型阶次和参数的算法，源自于潘立登的系统建模与辨识。-At the same time identification model order and parameters of the algorithm, derived from Li-Deng Pan system modeling and identification.
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SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.092203s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001108s ]
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SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000923s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001074s ]
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