Parallel gate valveparallel slide valve的意思|示意
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平行闸阀平行滑阀
Parallel gate valveparallel slide valve的网络常见释义
平行式闸阀 ... 驱动阀门 Actuated valve 平行式闸阀 Parallel gate valveparallel slide valve 楔式闸阀 Wedge gate valve ...