在管壳换热器中，一般腐蚀性强的流体在管内走。 （

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24912' and id < 2125280 and id<>'2125280' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24912' and id > 2125280 and id<>'2125280' order by id asc limit 5