等压线，COM类。已经做成COM类，生成的网格不要太小。传实际经伟度时，先放大1000倍-Isobar, COM class. COM classes have been made to generate the grid not too small. Wei-Chuan practice by degrees, the first amplification 1000 times
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002745s ]
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:0.097987s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002610s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002591s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.003075s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003992s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002265s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003519s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.017005s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.003178s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 173148 [ RunTime:0.001262s ]
