飞行控制中的转换坐标下的距离计算，可以根据给出的经纬度算出实际距离，开发环境为MPLAB,单片机为16位的dsPIC30F4013-Flight control of the conversion of a distance-based coordinates can be calculated in accordance with the actual latitude and longitude given distance from the development environment for the MPLAB, single-chip 16-bit dsPIC30F4013
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001999s ]
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:0.085750s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002362s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001913s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002184s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003729s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001938s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003227s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014662s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002234s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 110790 [ RunTime:0.001120s ]
