基本解释斗式泵词组短语短语monofilter scoop pump 单体斗式泵scoop pump coupling 斗式泵联轴器monoblock scoop pump coupling 单体斗式泵联轴器monoinhiqusome kind oftity scoop pump 单体斗式泵hand priming of pump scoop 手勺scoop pump更多词组专业释义机械工程斗式泵