这是一个关于四线马达的使用说明，还是比较详细的，对想用单片机驱动马达的同学来说很实用！-This is a four-wire motors on the instructions, it is quite detailed, right to the students to use microcontroller-driven motor is very useful!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001333s ]
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:0.090588s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001346s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001930s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001372s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003813s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001206s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003355s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018681s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002059s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 162605 [ RunTime:0.001661s ]
