制造蜗轮的材料必须具有良好的（ ）性。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24889' and id < 2124325 and id<>'2124325' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24889' and id > 2124325 and id<>'2124325' order by id asc limit 5