PDF文件如何设置分辨率

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select * from tbl_Articles WHERE ArticleID=1279683 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1279683 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1279683 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1418736,1117968,1397614,281426,289859,778579,1319721,253725,279252,227164,323719,225296,906655,1334006,303805,1343213,2917280,1126470,407213,1078903,1102206,1099535,413827,1067197,1001707,1075644,288154,1093264,442411,514088) ORDER BY field (ArticleID,1418736,1117968,1397614,281426,289859,778579,1319721,253725,279252,227164,323719,225296,906655,1334006,303805,1343213,2917280,1126470,407213,1078903,1102206,1099535,413827,1067197,1001707,1075644,288154,1093264,442411,514088)