为了制造与测量方便，普通V带以带内周长作为基准长度。 （ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24893' and id < 2124476 and id<>'2124476' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24893' and id > 2124476 and id<>'2124476' order by id asc limit 5