non-return valve
英 [ˈnəʊn rɪˈtɜːn vælv]
美 [ˈnoʊn rɪˈtɜːrn vælv]
单向（止回）阀；止逆阀; 渔具防逃装置（总称）; 缩写词为NRV
双语例句
- Headstock piece on media flows and forces open or closed to prevent backflow valve media called a non-return valve.
启闭件靠介质流动和力量自行开启或关闭，以防止介质倒流的调节阀叫止回阀。 - Check valve is also called the reflux valve, non-return valve.
止回阀又称为逆流阀、逆止阀、肯压阀、单向阀。 - Water pumps at the end of the relevant type of valve is also a non-return valve.
水泵吸水关的底阀也属于止回阀类。 - If this can not be avoided it is recommended to install either an simple thermostat close to the inlet which switches OFF the VOD or a non-return valve between the contact system and the VOD.
如果这个不能避免（的话），这里建议在靠近入口处安装一简易恒温器来切断VOD，或在接触设备与VOD之间设置一逆止阀。 - Normally the blood flows from the testicles back to the heart via small veins that have a non-return valve to stop the blood flowing backwards to the testicles.
通常来说，血液通过一些小静脉从睾丸回流到心脏。这些小静脉有单向活动的瓣膜阻止血液回流至睾丸。 - Failure Analysis of Non-return Valve Components
单向活门组件失效分析 - Steadiness of Non-return Valve against Additional Disturbance
外干扰下扑板式止逆阀的稳定性 - Study on Dynamic Characteristics of Non-Return Valve
止回阀动态特性研究 - A new practical patented product ── XD anti-pollution non-return valve, including its application range, working principle are introduced.
介绍了实用新型专利－XD型防污单向阀的应用领域、工作原理。 - The technical transformation is implemented to install the non-return valve in the pump entry pipeline, and long-term test is carried on. The result has shown that the vacuum-drop and shut-down accident of switching the water-surround-vacuum pump has been solved successfully.
通过实施技术改造，在水环真空泵入口管路上加装止回阀，并进行了长期试验，彻底解决了凝汽器真空泵正常运行及切换过程由于故障所引起的降真空停机事故。 - Study on the Diameters of Piston and Valve Ball of Non-return Valve
单向阀阀球与活塞直径设计尺寸的研究