Gas flat-plate gate valve的意思|示意
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气体平板闸阀
Gas flat-plate gate valve的网络常见释义
燃气平板闸阀 ... 补偿式双闸板平板闸阀 Fcompensation double parallel gate valve 燃气平板闸阀 Gas flat-plate gate valve 电动楔式闸阀 Electric wedge-style valve ...