有关时频分析做三维图形的源程序,该程序可以绘出信号,频率,以及时频三维图形,对信号的特性分析可以较好把握!-the time-frequency analysis to do 3D graphics source files, the program can draw signal frequency, and the time-frequency 3D graphics, the signal characteristics can better grasp!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001960s ]
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:0.087103s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002160s ]
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SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001843s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002342s ]
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