两件式铸青铜结构.此球阀具有很好的能量隔离性能.如果这种阀门处于关闭位置,则下游气体将排放到大气中.
【化】 铸青铜
cast bronze
暂无补充释义。
相关例句
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cast
play the harp( (lute) to a cow; cast pearls before a swine
cast line
plaster cast
cast aside
cast
making magnesium-treated cast iron using master alloys
cast-film extrusion[专业]塑料