低洁净级别区域的房间的地漏要有水弯或水封防止倒流。
Floor drains in lower grade clean rooms should be fitted with traps or water seals to prevent back-flow.
隔断安全性高，介质通过防止器时水头损失小，有效的防止倒流污染。
The invention has the advantages of high partition safety, small loss for a tap when a medium passes through the preventer and effective prevention on the pollution caused by the backflow.
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。
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.
因为重力可以让胃酸流回胃里，所以这样有助于在睡觉时防止胃酸倒流。
This can help reduce acid reflux when sleeping, as gravity keeps the acid in the stomach.
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。
Such as pumping up you must turn off valve to prevent backflow of concrete, then removed the feed tube.
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。
The role of the check valve to prevent water backflow, with the film door, also do not need a check valve.
旋启式止回阀用于防止水平管路或垂直管路的流体倒流。
Swing check valves are used to prevent reversal of flow in horizontal or vertical pipe lines.
采用水泥承转器挤水泥技术能防止挤水泥浆倒流，且多余的水泥浆能从工具的上部反循环至地面。
Using cement retainer squeezing technology can prevent the cement backward flow, and CAM let the residual cement through the upper party to recycle to the ground.
启闭件靠介质流动和力量自行开启或关闭，以防止介质倒流的阀门叫止回阀。
Headstock piece on media flows and forces open or closed to prevent backflow valve media called a non-return valve.
止回阀是防止介质倒流的自动阀门，流体从进口侧流向出口侧。
Check valves are automatic valves to prevent the media back, fluid from the inlet to outlet side to side.
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。
First: to act as an automatic non-return valve by preventing a backflow of steam from the main steam header to the boiler.
对夹止回阀是用于防止管道和设备使用中介质倒流的一种 阀门；
Wafer swing check valve is used to prevent media from flowing backwards in pipeline and device ;
同轴、管内螺纹弹簧单导对夹式止回阀，专门用于防止水击作用和倒流现象。
The ALC? is an in-line, spring assisted, single guided "wafer" check valve designed to prevent "water hammer" and "reverse" flow.
同轴、管内弹簧止回阀，工业上要求严格的清理时可用来防止水倒流。
The DSV? is an in-line spring-assisted check valve designed to prevent flow reversal in industries with strict cleanliness codes.
文中分析认为较经济而可行的方法是在支流下游设立止回闸，防止河水倒流从而保护支流水体。
A suggest is put forward after investigation and analysis that a return flow prevention gate be built for the benefits of economy and environment.
这就防止废气倒流入进气管。
This prevents the intake charge from being blown out the exhaust.
本文对管网叠压供水设备中的倒流防止器和气压罐等器件的应用情况进行分析。
This paper analyzed the application case of the components such as anti-backflow equipment or air-pressure tank that using in the pipe network add-pressure water supply equipment.
主要用于高压加压的天然气加气系统，防止加压天然气倒流的阀门。焊接式高压单向阀是靠管路中介质本身的流动产生的力而自动开启和关闭的，属于一种自动阀门。
Welding type high pressure check valve is generated by the pipeline flow of the medium itself force automatically turned on and off, is an automatic valve.
主要用于高压加压的天然气加气系统，防止加压天然气倒流的阀门。焊接式高压单向阀是靠管路中介质本身的流动产生的力而自动开启和关闭的，属于一种自动阀门。
Welding type high pressure check valve is generated by the pipeline flow of the medium itself force automatically turned on and off, is an automatic valve.
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