plug gate valve的意思|示意

塞型闸阀 ... 挠性整体楔形闸扳 flexible solid wedge 整体楔形闸板 solid wedge 塞型闸阀 plug gate valve ...

塞型 ... 零体楔形闸板 solid wedge 塞型 闸阀 plug gate valve 纵贯型闸阀 through conduit gate valve ...

塞形闸阀 ... 楔形单闸板 Solid wedge 塞形闸阀 Plug gate valve 疏通型闸阀 Through conduit gate valve ...