释义 |
Definition of backflow in English: backflownounˈbakfləʊ mass nounThe movement of liquid or air back in the direction it was flowing from. when filling the tank, use an anti-siphon device to prevent backflow the valves prevent backflow of blood into the veins Example sentencesExamples - The essence of this approach, perhaps, is the avoidance of process waste by using automation to avoid "information backflow".
- Incorrectly installed systems can waste water and care must be taken not to contaminate mains water supplies through backflow.
- Other problems would be backflow into the system or a rising groundwater table that would allow seepage into the collection system.
- If backflow occurs during blood sample aspiration or from a transfusion, there also could be contamination.
- Install a backflow valve to prevent sewer backup from coming into your home.
- Venous ulceration occurs when the valves inside the veins become incompetent, leading to backflow and congestion of venous blood.
- Patients who have taken those drugs may have changes in their heart valves that cause leakiness and backflow of blood.
- The reverse flow of electricity or "backflow" can injure an unsuspecting utility worker.
- Veins in the legs have valves which normally prevent any backflow of the blood on its way towards the heart.
- The lymphatic vessels, like veins, have one-way valves that prevent backflow.
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