短語詞組短語monofilter scoop pump 單體斗式泵scoop pump coupling 斗式泵聯(lián)軸器monoblock scoop pump coupling 單體斗式泵聯(lián)軸器monoinhiqusome kind oftity scoop pump 單體斗式泵hand priming of pump scoop 手勺 返回 scoop pump