为什么单反相机不使用电子快门

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select * from tbl_Articles WHERE ArticleID=2971946 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2971946 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2971946 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1112943,1102534,343790,1698766,1046100,2972149,1084459,1131755,1046995,1972426,1796078,1081394,874258,1121218,2947486,2724719,1898188,1589219,2894798,1085250,2171937,2959281,1115003,1119570,1102328,1127070,1084211,1118993,1064653,1131535) ORDER BY field (ArticleID,1112943,1102534,343790,1698766,1046100,2972149,1084459,1131755,1046995,1972426,1796078,1081394,874258,1121218,2947486,2724719,1898188,1589219,2894798,1085250,2171937,2959281,1115003,1119570,1102328,1127070,1084211,1118993,1064653,1131535)