三相变压器的联结组别中，Yd11 表示（  ）？

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69423' and id < 4495214 and id<>'4495214' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69423' and id > 4495214 and id<>'4495214' order by id asc limit 5