double-faced slide gate valve
... double-proted slide valve 双汽口滑阀 double-faced slide gate valve 两面滑门阀 ; 两面滑门第阀阅 double -faced box slide valve 双面滑阀 ...
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... slide valve 滑阀 faced slide gate valve 两面滑门阀 SGV slide gate valve 插板阀 ...
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短语
两面滑门第阀阅
double-faced slide gate valve