(用Euler法和改进的Euler法求解，用三阶Adams外插法及内插法求解
-(Using Euler method and the improved Euler Method, using third-order Adams extrapolation method and interpolation method for solving
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SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000788s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001159s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 243312 [ RunTime:0.012122s ]
