本程序提供了输入表达式计算、积分、微分、拟合、插值等多种数值计算，界面简练，功能强大-procedures for the importation of expression, integral, differential, fitting, interpolation and other numerical calculation, concise interface, powerful
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001135s ]
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:0.107640s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001448s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001976s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001430s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005387s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001151s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003736s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.020245s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001086s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 318377 [ RunTime:0.014326s ]
