当固体绝缘受到较大的应力或振动而因此出现裂缝时，其击穿电压将显著下降。()

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69489' and id < 4501357 and id<>'4501357' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69489' and id > 4501357 and id<>'4501357' order by id asc limit 5