直齿圆柱齿轮的齿根圆一定大于基圆。（ ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='7808' and id < 619147 and id<>'619147' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='7808' and id > 619147 and id<>'619147' order by id asc limit 5