程序实现用牛顿－拉夫逊迭代法进行潮流计算。不仅有潮流计算，还有数据处理的程序-Procedure using the Newton- Raphson iterative method for flow calculation. Not only power flow calculation, as well as data-processing procedures
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002072s ]
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:0.090029s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002417s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001928s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002306s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003783s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002134s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003309s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015234s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002434s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 167667 [ RunTime:0.001182s ]
