体模内50%等剂量线的延长线交于模体表面的区域定义为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29515' and id < 2400749 and id<>'2400749' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29515' and id > 2400749 and id<>'2400749' order by id asc limit 5