短語詞組短語Electric actuator for knife -gate valve 電氣刀門執(zhí)行器閥門Mannual knife gate valve 樣品名稱electric knife gate valve 電動刀型閘閥Pneumatic Knife Gate Valve 氣動刀閘閥Knife Gate Valve - ORBINOX 刀閘閥Knife -shaped gate valve 刀型閘閥 返回 knife gate valve