计算机主机和终端串行传送数据时，要进行串一并或并一串转换，这样的转换 。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29992' and id < 2430593 and id<>'2430593' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29992' and id > 2430593 and id<>'2430593' order by id asc limit 5