backflow
美 ['bækfloʊ] 
英 ['bækfləʊ]
- n.倒流；逆流；〔技〕回流；反流
- 网络逆流回流；回流现象；逆流式
词形变化
复数：backflows
英汉解释
英英解释
例句
Can be used after inflating, easy to carry. Inflated and deflated when the valve just pinch flat, a dedicated anti-backflow device gas.
充气后即可使用，便于携带。充、放气时仅需捏扁气门嘴，专设气体防倒流装置。
The fuel tank can be used for storing fuel and can supply the fuel to an engine and collect the fuel backflow through a fuel pipeline.
它是可以贮存燃油，并通过燃油管路向发动机提供燃油和接收回流的燃油箱装置。
Field test shows that this technique has obviously improved fracturing fluid backflow and management efficiency.
现场试验表明，该技术明显提高了压裂液返排效果和管理效率。
A tanks-in-series model with backflow was used for mathematical modeling of the activated sludge wastewater treatment process.
一个坦克在系列模型以回流被使用了为数学模型被激活的烂泥废水处理过程。
The hose connection backflow preventer shall consist of two independently operating check valves with an intermediate atmospheric vent.
这种软管连接防回流阀应该包括两个独立运行的止回阀，这些止回阀带中间大气排气口。
Backflow prevention should be present, along with a constant inert flow through the system.
由于存在通过系统的固定惯性气流，要设有防止回流装置。
Caution: Do not install a strainer ahead of the backflow preventer on seldom-used, emergency water lines (i. e. fire sprinkler lines).
警告：在平时很少用，只在紧急状态下使用的管线（即消防喷淋管线）上的防回流阀前不要安装过滤器。
a visual check of air gaps is sufficient , but mechanical backflow preventers have to be tested with properly calibrated gauge equipment.
尽管安装气隙足够目视观察，但是机械式防回流阀还是必须用适当量程的仪表设备进行检测。
Designed to retrofit backflow protection onto fire hydrants used for temporary water service.
适用于用在临时性水应用的消防栓上的防回流阀的更新改造。
At this point reverse flow may allow process products to backflow into the cylinder.
在这一点倒流会允许过程中的产品回流进钢瓶。
Disc : is designed to close on its own weight to stop backflow from gaining sufficient velocity to create damaging shock .
阀瓣：靠自身重量关闭来阻止流体倒流形成足够大的流速，从而产生破坏性冲击。
Can be temporarily removed for replacement of the backflow preventer without the need for replacement of freeze protection services .
可以暂时性拆卸，在不需要更换防冻装置的情况下，便于更换防回流阀。
The shutoff valve with the test cock is to be mounted on the inlet side of the backflow preventer.
带测试旋塞的关闭阀应该安装在防回流阀的进口侧。
there was backflow in some region close to the wall of the reactor.
靠近反应器壁的有些区域存在回流现象。
The influence of secondary electron emission on efficiency and backflow can be improved through an elaborate electron optics design.
在研究二次电子特性及成像机理的基础上，设计了二次电子成像系统。
First: to act as an automatic non-return valve by preventing a backflow of steam from the main steam header to the boiler.
首先，能过作为一个自动逆止阀，防止蒸汽从主蒸汽加热器上倒流到锅炉里。
Allows for the installation of the backflow preventer "at the service connection" in accordance with AWWA Standards.
允许在“维修连接处”安装防回流阀，符合美国自来水厂协会的标准。
Results: The results show that 75% ethanol was the optimal solvent and backflow extraction with ethanol was the preferably method.
结果：研究表明，75%乙醇为绞股蓝总皂甙提取的最佳溶剂，乙醇回流提取法为最优方法。
A strainer should be installed ahead of the backflow preventer to protect all internal components from unnecessary fouling.
在防回流阀前应该安装一个过滤器，以保护所有内部部件不会受到不必要的污染。
If debris in the water system continues to cause fouling, a strainer can be installed upstream of the backflow assembly.
如果水系统内的堆积物继续产生污垢，则在回流阀总成的上游要安装一个过滤器。
Strategically placed doors provide access to the backflow prevention assembly for testing and repair without removal of the entire unit .
永久性配置的门便于接近防回流阀总成进行检测和不拆卸整个装置的情况下进行维修。
in the chest caused by acidic backflow from the stomach irritating the esophagus; symptomatic of an ulcer or other disorder.
酸质自胃倒流而刺激食道引起的胸部发热疼痛的感觉；有溃疡或其他失调的症状。
NOTE: DO NOT USE A PIPE WRENCH TO REMOVE THE RELIEF VALVE ASSEMBLY FROM THE BACKFLOW PREVENTER.
注意：不要使用管钳从防回流阀上拆卸安全阀总成。
Fracture reconstruction faced problems, including difficult demulsification of fracturing fluid, low backflow rate and poor effect.
压裂改造存在压裂液破胶难、液体返排率低、效果差等难点。
A combination fill valve and backflow preventer shall be installed on the boiler feed line to provide make-up water to the boiler.
在锅炉进水管道上应该安装组合进水阀和防倒流阀，为锅炉提供补给水。
Watts Regulator offers a wide variety of backflow testing equipment, outlined in the following pages of this guide.
美国瓦茨提供宽广系列的防回流阀检测设备，本指南的下列网页对这些产品作了简介。
To protect the potable water supply from backflow from a non-potable source due to a drop in supply.
防止由于高度降低而受到非饮用水源回流到饮用水供应系统中。
The ideal solution for residential containment applications that require in-line testable and serviceable dual check backflow preventers.
对于要求在线可检测和可维修双止回防回流阀的住宅防污染应用，这是一个理想的解决方案。
To avoid this discharge, install a spring- loaded check valve ahead of the backflow assembly to "lock-in" the downstream pressure.
为了避免这种排放，应该在防回流阀总成前面安装一个弹簧负载止回阀来“锁定”下游压力。
Mechanical backflow preventers have internal seals, springs , and moving parts that are subject to fouling, wear, or fatigue.
机械式防回流阀配置内部密封、弹簧和移动部件可能会被污染、磨损或疲劳。
The 957 and 957RPDA backflow preventer should be tested by a certified tester at the time of installation.
在安装期间，957和957RPDA防回流阀应该由有资格证书的检验员进行检验。
The analytic calculation approach for minimum backflow ratio of binary ideal solution multi lateral lines distillation tower is introduced.
提出一种二元理想体系多侧线精镏塔最小回流比的解析计算法。
In-line flow restrictor protects the meter measuring element and the backflow preventer components from damage due to excessive flow.
管内流量限制器保护仪表测量元件和防回流阀部件不会因为过大的流量而受到损坏。
It eliminates the necessity of closing the inlet ball valve which could release pipe scale and foreign matter into the backflow preventer.
差压表避免关闭进口球阀，从而避免由于重新开启时可能会将管道结垢和外部物质冲刷下来，并将其带入防回流阀中。
The utility model relates to a backflow prevention type esophagus supporting tube for medical use.
本实用新型涉及一种医用防反流式食道支撑管。
Its own rules include the rules of keeping up with times, interacting between host and guest and two--way backflow.
其自身的规律有与时俱进、主客互动和双向回流。
DUAL CHECK VALVE BACKFLOW PREVENTER For low hazard cross- connections . Continuous pressure applications .
双止回防回流阀用于低危险交叉连接。持续压力应用场合。
These spring-operated poppet valves, with optional relief settings, allow free flow in only one direction and prevent backflow.
此类弹簧式提升阀配有可选排放装置，能够使单向液体顺畅通过，防止回流。
The relief valve may be serviced while on or off the backflow preventer valve.
可以在防回流阀上维修安全阀，或将其从防回流阀拆卸下来维修。
REDUCED PRESSURE ZONE BACKFLOW PREVENTER For High Hazard Cross-connections and continuous pressure application.
减压区防回流阀用于高危险交叉连接和持续压力应用场合。
