查询词典 backflow

A dual check backflow preventer shall be installed at each wash sink hose unit or at referenced cross-connections to prevent the reverse flow of non-potable water into the potable domestic water system.

这种双止回防回流阀应该安装在每个冲刷洗涤盆软管装置处或参照交叉连接，以防止非饮用水回流到室内饮用水系统中。

The internal flow degenerates under off-design conditions, the backflow regions increase at the descending and outlet segments and the distribution uniformities of axial velocity drop notably at the crest and outlet crosssections of the passage.

在非设计工况下，虹吸式出水流道内部流态恶化，下降段和出口段的回流区范围增大，驼峰断面和出口断面轴向流速分布均匀度显著下降。

The study said the silting-up and pollution of the Pasig River connecting Laguna de Bay with the sea on Manila Bay also obstructed the natural backflow of saltwater to nourish aquatic life.

研究报告中还提到，连接马尼拉湾与拉古那地湾湖泊的帕西格河因河床淤积与污染，使海水无法逆流为湖中生物带来养分。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。