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In operation, to a fault and will inevitably damage, which can not be normal pumping.
在运行中，难免会发生故障和损坏，以致不能正常抽水。
youdao
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Not using Oil or Waste as pumping medium, low operation cost.
工作方式不使用油或水，大幅降低操作成本。
youdao
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Not using Oil or Waste as pumping medium, low operation cost.
工作方式不使用油或水，大幅降低操作成本。
youdao