超声波的声源振动频率大于：

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24721' and id < 2117639 and id<>'2117639' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24721' and id > 2117639 and id<>'2117639' order by id asc limit 5