英语释义

• a flow that returns toward its source

片语

Backflow preventers回流防止器；防止回流设施

backflow preventer回流防止器；防止回流设施

backflow damper回流缓沖器

backflow w逆流回流

pyelolymphatic backflow肾盂淋巴反流

backflow test回流试验

pyelointerstitial backflow肾盂间质反流

refluxing backflow回流

backflow volume回流液量

backflow connection回流管

英汉例句

• however, shanghai is keen to grab a bigger piece of the action, and it’s on a fast learning curve. with the quickening of rmb reforms, shanghai is also scrambling to devise new rmb backflow methods.

  不过，上海正在积极行动争夺更大机会，并在学习曲线上快速移动。

• 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。

• model 994blt portable hydrant backflow preventer meets the design requirements of most national standards. due to the portability of the unit, there are no national approvals available.

  型号994blt移动式消火栓防回流阀满足大多数美国国家标準的设计要求。由于这种装置的移动性，所以目前没有可使用的美国国家认证。

• double check valve assembly shall be installed at referenced cross-connections to prevent the backflow of polluted water into the potable water supply.

  在相关的交叉连接处应该安装一个双止回阀总成，以防止受到污染的水回流到饮用水系统中。

• the reservoir created by the backflow of the dam will extend 360 miles up river to chongqing (「chong-ching」), a distance equal to nearly half the length of california.

  大坝形成的长达360英里（579公里）的水库延伸至重庆，距离约为美国加利福尼亚州长度的一半。

• 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。“”

• backflow preventers should never be placed in pits unless absolutely necessary and then only when and as approved by local codes.

  除非绝对必要并且得到当地规程的批準，否则防回流阀不能放置在坑内。

• 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。

• the toroidal backflow in a low speed round jet issuing from a nozzle was observed successfully for the first time.

  首次成功地在从一定口径的喷嘴流出的低速轴对称层流射流中观察到环形回流流动。

• a backflow of urine from the 「.

  尿液从尿管回流到肾。

• 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。

• 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。

• designed to test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies, allowing you to eliminate both pressure and differential test gauges.

  适用于检测压力真空断路阀，减压防回流阀或双止回阀总成，不再需要压力表和压差表。

• the tk-dl can test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies.

  tk-dl可以检测压力真空断路阀，减压防回流阀或双止回阀总成。

• whether there is enough water in the valve or not, the valve door can remain closed, performing the function of preventing sewage backflow to its best.

  当处于备用状态时，活门便会自动锁上，无论隔气内之水份是否足够，活门仍能保持关闭，发挥最佳的防回流功能。

• model 994blt portable hydrant backflow preventer is designed and manufactured to provide long-term service with minimal maintenance.

  型号994blt移动式消火栓防回流阀的设计和制造理念就是为用户提供长期的使用寿命和最少的维护工作。

• 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。