进行布氏硬度试验时，当试验条件相同，压痕直径越小，则材料的硬度越低。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24888' and id < 2124267 and id<>'2124267' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24888' and id > 2124267 and id<>'2124267' order by id asc limit 5