当液体指示器显示锅炉内水不充足时，泵将自动为其补充水。
When the level indicator shows that the water is insufficient in the boiler, the pump will make up water for it automatically.
当液体指示器显示锅炉内水不充足时，泵将自动为其补充水。
When the level indicator shows that the water is insufficient in the boiler, the pump will make up water for it automatically.
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