流动比率低说明什么

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select * from tbl_Articles WHERE ArticleID=1109476 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1109476 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1109476 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(480864,491971,371267,578137,875410,1650471,1992928,1446266,2241850,1109076,937632,1215398,659975,374781,760500,1081340,571096,579369,916850,836416,1772597,479224,394428,1192772,3428574,1459937,3505549,723661,960167,1190281) ORDER BY field (ArticleID,480864,491971,371267,578137,875410,1650471,1992928,1446266,2241850,1109076,937632,1215398,659975,374781,760500,1081340,571096,579369,916850,836416,1772597,479224,394428,1192772,3428574,1459937,3505549,723661,960167,1190281)