为什么叫回归线?

页面:/news/view-802314/ | 耗时:0.1829 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=802314 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=802314 LIMIT 0,1
select * from tbl_Articles_sphinx where id=802314 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(99513,1136313,1117421,99440,84408,84075,1127595,406509,81407,80474,88785,80806,1123949,95440,81712,862707,1139682,88452,95149,82127,103660,80652,96062,83174,1130614,80358,1218875,105080,1110656,3071635) ORDER BY field (ArticleID,99513,1136313,1117421,99440,84408,84075,1127595,406509,81407,80474,88785,80806,1123949,95440,81712,862707,1139682,88452,95149,82127,103660,80652,96062,83174,1130614,80358,1218875,105080,1110656,3071635)