backflow

简明释义

英[ˈbækfləʊ]美[bækfloʊ]

n. 回流；逆流

英英释义

单词用法

同义词

反义词

例句

1.A strainer should be installed as shown, ahead of backflow preventers to prevent discs from unnecessary fouling.

应该如图所示在防回流阀前安装一个过滤器，防止阀瓣出现不必要的污垢。

2.By installing a backflow preventer on any residential water system, you create a closed system that won't accommodate thermal expansion.

通过在任何住宅水系统上安装一个防回流阀，可以形成一个无法适应热膨胀的封闭系统。

3.The backflow preventer must be installed upstream of the regulator.

防倒流装置必须安装在调节阀的上游位置。

4.Installing a backflow preventer in a pit or vault is not recommended.

不建议在坑内或拱顶内安装防回流阀。

5.A study was made of the feasibility and effect of feeding during settlement in non-backflow intermittent aeration system (NBIAS).

对无回流间歇曝气系统在沉淀期间进水的可行性和进水效应进行了研究。

6.If debris in the water system continues to cause fouling, a strainer can be installed upstream of the backflow assembly.

如果水系统内的碎片继续造成污染，则需要在防回流阀总成的上游安装一个过滤器。

7.By installing a backflow preventer on any residential water system, you create a closed system that won't accommodate thermal expansion.

通过在任何住宅水系统上安装一个防回流阀，可以形成一个无法适应热膨胀的封闭系统。

8.We noticed a backflow (回流) issue in the swimming pool, leading to cloudy water conditions.

我们注意到游泳池出现了回流问题，导致水质浑浊。

9.During heavy rain, the risk of backflow (回流) increases, potentially flooding basements.

在大雨期间，回流的风险增加，可能会淹没地下室。

10.The city implemented new regulations to minimize backflow (回流) incidents in residential areas.

该市实施了新规定，以最小化住宅区的回流事件。

11.The plumbing system was designed to prevent any backflow (回流) of contaminated water into the clean water supply.

这个管道系统被设计成防止任何污染水回流到清洁水源。

12.Installing a backflow (回流) prevention valve can help protect your irrigation system.

安装回流防止阀可以帮助保护您的灌溉系统。

作文

Backflow is a term often used in plumbing and fluid dynamics, referring to the unwanted reverse flow of water or other fluids. This phenomenon can lead to serious issues, especially in systems designed to transport clean water. When backflow occurs, it can contaminate potable water supplies, posing health risks to individuals who consume that water. To better understand the implications of backflow (回流), we must explore its causes, effects, and prevention methods.One of the primary causes of backflow (回流) is a sudden drop in water pressure within a plumbing system. This can happen due to various reasons, such as a burst pipe, a fire hydrant being opened, or even high demand for water in certain areas. When the pressure drops, the natural flow of water can be reversed, allowing contaminated water from other sources to flow back into the clean water supply.Another cause of backflow (回流) is the use of certain fixtures and appliances that can create negative pressure. For instance, when a hose is submerged in a bucket of soapy water and the water is drawn through the hose, it can create a vacuum that pulls the soapy water back into the clean water line. This is known as backsiphonage, a specific type of backflow (回流). Additionally, cross-connections between potable and non-potable water sources can also result in backflow (回流), further increasing the risk of contamination.The effects of backflow (回流) can be severe. Contaminated water can introduce harmful bacteria, viruses, and chemicals into the drinking water supply, leading to waterborne diseases and other health issues. In residential settings, this could mean that families unknowingly consume water that has been tainted with pesticides, sewage, or industrial waste. The consequences can be dire, particularly for vulnerable populations such as children, the elderly, and those with weakened immune systems.To mitigate the risks associated with backflow (回流), various prevention methods can be implemented. One of the most effective solutions is the installation of backflow preventers. These devices are designed to allow water to flow in only one direction, preventing any reverse flow from occurring. Regular inspection and maintenance of plumbing systems are also crucial to ensure that potential issues are identified and addressed before they lead to backflow (回流).In addition to mechanical solutions, public awareness and education about the risks of backflow (回流) are essential. Homeowners should be informed about the importance of proper plumbing practices, such as avoiding cross-connections and ensuring that hoses are not submerged in contaminated water. Local governments and water authorities can play a significant role in promoting these practices and enforcing regulations that help protect water supplies from backflow (回流).In conclusion, understanding backflow (回流) is vital for maintaining the safety and integrity of our water supply. By recognizing the causes and effects of this phenomenon, we can take proactive measures to prevent it and safeguard public health. Whether through the installation of backflow preventers or through education and awareness campaigns, addressing backflow (回流) is a crucial step towards ensuring that everyone has access to clean and safe drinking water.

回流是一个常用于管道和流体动力学的术语，指的是水或其他流体的不必要的逆流现象。这种现象可能导致严重问题，尤其是在设计用于运输清洁水的系统中。当回流发生时，它会污染饮用水供应，给饮用这些水的人带来健康风险。为了更好地理解回流（backflow）的影响，我们必须探讨其原因、影响和预防方法。造成回流（backflow）的主要原因之一是管道系统内水压的突然下降。这可能由于多种原因引起，例如管道破裂、消防栓被打开，甚至某些地区对水的高需求。当压力下降时，水的自然流动可能会被逆转，允许来自其他源的污染水反流入清洁水供应中。另一种造成回流（backflow）的原因是某些装置和电器的使用，这些装置和电器可能会产生负压力。例如，当一根软管浸入一桶肥皂水中并通过软管抽水时，可能会产生真空，将肥皂水拉回清洁水管线。这被称为倒吸，是一种特定类型的回流（backflow）。此外，饮用水和非饮用水源之间的交叉连接也可能导致回流（backflow），进一步增加了污染的风险。回流（backflow）的影响可能是严重的。污染水可能会将有害细菌、病毒和化学物质引入饮用水供应中，导致水传播的疾病和其他健康问题。在住宅环境中，这可能意味着家庭在不知情的情况下饮用了被农药、污水或工业废物污染的水。后果可能非常严重，特别是对于儿童、老年人和免疫系统较弱的人群。为了减少与回流（backflow）相关的风险，可以实施各种预防措施。其中最有效的解决方案之一是安装回流防止器。这些设备旨在只允许水单向流动，从而防止任何逆流的发生。定期检查和维护管道系统也至关重要，以确保潜在问题在导致回流（backflow）之前被识别和解决。除了机械解决方案，公众意识和关于回流（backflow）风险的教育也是必不可少的。房主应该了解适当的管道实践的重要性，例如避免交叉连接，并确保软管不沉浸在污染水中。地方政府和水务机构可以在促进这些做法和执行帮助保护水供应免受回流（backflow）影响的法规方面发挥重要作用。总之，了解回流（backflow）对维护我们水供应的安全性和完整性至关重要。通过认识到这种现象的原因和影响，我们可以采取主动措施来防止它，并保护公众健康。无论是通过安装回流防止器，还是通过教育和宣传活动，解决回流（backflow）问题都是确保每个人都能获得清洁和安全饮用水的重要一步。