心房颤动的f波通常在哪个导联最清楚

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30587' and id < 2467903 and id<>'2467903' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30587' and id > 2467903 and id<>'2467903' order by id asc limit 5