三相变压器并联运行时，运行的各台变压器应满足（     ）相同/相等。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68478' and id < 4421442 and id<>'4421442' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68478' and id > 4421442 and id<>'4421442' order by id asc limit 5