在数字通信网中（图1）,网元n1与n2之间的段落属于（ ）。 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28964' and id < 2357918 and id<>'2357918' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28964' and id > 2357918 and id<>'2357918' order by id asc limit 5