birth-death ratio
生死比率
birth-death ratio【统计】
暂无补充释义。
相关词条
birth-death ratio
birth-death type【计】
birth-death type
birth-death ratio
birth-death ratio【统计】
暂无补充释义。
birth-death ratio
birth-death ratio
birth-death type【计】
birth-death type
birth-death ratio