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suction pump英英字典_suction pump剑桥英语解释_suction pump柯林斯英文解释_歐米惠必应词典
歐米惠必应词典

suction pump

S 开头单词

柯林斯词典

    suction pump

  • 1. N a pump for raising water or other fluid by suction. It usually consists of a cylinder containing a piston fitted with a flap valve 抽水機

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