以下为句子列表：
英文: Two-Piece,Cast Bronze construction.The NIBCO T585-70-SV ball valve provides positive energy isolation.With the valve in the closed position the down stream air exhausts to the atmosphere.
中文: 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.
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