正弦量的三要素是指它的最大值.角频率和相位。()

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32632' and id < 2594861 and id<>'2594861' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32632' and id > 2594861 and id<>'2594861' order by id asc limit 5