直肠癌三野等中心照射定位时，射野中心一般放在

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29516' and id < 2400800 and id<>'2400800' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29516' and id > 2400800 and id<>'2400800' order by id asc limit 5