关于非自动衡器的国家技术规范，主要包括国标的各类衡器的技术规范，尤其JJG539-97、JJG648和JJG564，网上比较难得免费下载点-On non-automatic weighing instrument of national technical specifications, including National technical specifications of various scales, in particular JJG539-97, JJG648 and JJG564, relatively rare free download online at
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001091s ]
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:0.064804s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000966s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001387s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001185s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003546s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000956s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004131s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014953s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001064s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 163421 [ RunTime:0.013915s ]
