互感系数M与下列哪个因素有关（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69074' and id < 4471064 and id<>'4471064' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69074' and id > 4471064 and id<>'4471064' order by id asc limit 5