变压器的额定容量是指变压器在铭牌规定的（        ）下，变压器二次侧的输出能力。  

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68477' and id < 4421290 and id<>'4421290' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68477' and id > 4421290 and id<>'4421290' order by id asc limit 5