棒-板气隙的长度增加，其击穿电压存在饱和现象。(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69526' and id < 4504700 and id<>'4504700' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69526' and id > 4504700 and id<>'4504700' order by id asc limit 5