短語詞組短語bellows -sealed valve 波紋管式密封閥bellows sealed gate valve 波紋管密封閘門閥;波紋管密封的閘板閥bellows sealed isolating valve 波紋管隔離閥bellows sealed control valve 波紋管密封控制閥bellows s sealed gate valve 波紋管密封閘門閥;波紋管密封的閘板閥 返回 bellows sealed valve