全部

1·Four required per backflow preventer.

每个防回流阀需要四个。

2·The happy blood is unable the backflow centripetal dirty.

幸福的血液无法回流向心脏。

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·The system should be flushed before the backflow valve is installed.

在安装回流阀之前系统应该进行冲刷。

5·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。

6·Who could go back in time, even if backflow, and we can hold for what?

谁也无法将时光倒流，就算倒流，我们又能抓得住什么呢。

7·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。

8·When installing a drain line, use Series 909 air gaps on Model 909 backflow preventers.

在安装排泄管线时，在型号909防回流阀上采用系列909气隙。

9·Then it also analyzes the policy and tendency of Shanghai overseas talented person backflow.

然后分析了上海市海外人才回流的政策和趋势。

10·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。

回流

1·Now, with so many foreign firms accumulating so much RMB, pressure is building to establish RMB backflow channels and an RMB offshore market.

如今，有如此多的外国公司积累了如此多的人民币，那么建立人民币回流渠道和一个人民币的离岸市场的压力也就越来越大。

2·In order to install landscape irrigation that works, you will need a landscape expert who understands terms like coverage, line pressure, backflow prevention, and isolation.

为了安装景观灌溉的作品，你需要一个景观专家，谁知道像覆盖面，线的压力，回流预防和隔离。

3·Building codes may also require anti-siphon or backflow devices, so surface water won't be pulled back into water lines and residential plumbing.

建筑法规可能还需要防虹吸或回流装置，使地表水不会被拖进水管道线路和住宅回来。

4·Then it also analyzes the policy and tendency of Shanghai overseas talented person backflow.

然后分析了上海市海外人才回流的政策和趋势。

5·The paper tells of the regulating principle, method, framework and experimental results of the regulating backflow valve for reciprocal compressor.

介绍了活塞式压缩机可调回流气阀的调节原理、方法和调节机构及其实验结果。

倒流

1·Such as pumping up you must turn off valve to prevent backflow of concrete, then removed the feed tube.

如向上泵送则必须先关闭截止阀，防止砼倒流，然后拆下出料管。

2·The role of the check valve to prevent water backflow, with the film door, also do not need a check valve.

逆止阀的作用是防止水倒流，有了拍门后，也就不需要逆止阀了。

3·In any fluid handling system, valves are the controlling element: starting or stopping flow, regulating or throttling flow, preventing backflow, or relieving and regulating pressure.

在任何流体处理系统中，阀门是作为控制装置：启动或停止流体流动，对流体进行调节或节流，防止倒流，或释放和调节压力。

4·Allow every beauty-seeking woman to last the secret of youth, restore their skin with firmness and flawless as if the time is being backflow.

令每位爱美女士之肌肤有如时光倒流，回复紧致无痕的状态，延续青春之秘密。

5·In the overhaul pump and output pipe, the system of fluid backflow will not occur.

这样在检修泵及输出管道时，系统中的液体不会发生倒流。

逆流

1·Since then we installed a backflow valve so it was less this time.

自从那时起，我们安装了一个逆流阀，所以这次少了很多。

(1)backflow preventer回流防止器；防止回流设施