超高压压缩机缸体材料应为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24887' and id < 2124183 and id<>'2124183' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24887' and id > 2124183 and id<>'2124183' order by id asc limit 5