系统辨识的输入信号为一个周期的M序列，从 中分离出并显示a1 、a2、 b1、 b2，画出输出观测值z的经线图形，并显示坐标网格-system identification of the input signal for a period of the M sequence, isolated from the show and a1, a2, b1, b2, paint output observation z warp graphics, and display Grid
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002156s ]
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:0.091291s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002828s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002826s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.003021s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005873s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002564s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005173s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.024723s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.003242s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 188167 [ RunTime:0.001559s ]
