Some economist argue that emigration can be a useful safety valve in hard times, reducing the numbers of the unemployed and avoiding the debilitating effects of long-term unemployment.
一些经济学家指出在苦难时期移民可能是一个平安的阀门。这样可以减少失业率，还能避免长期失业的影响。
CONCLUSION: Respiratory exercise is an effective method for reducing the pulmonary complications of patients with heart double valve replacement.
结论呼吸运动训练是减少心脏双瓣膜置换手术患者肺部并发症的有效措施。
Oxygen flows through the pressure reducing regulator and shut off valve to the masks.
氧气通过减压调节器和关断活门流向氧气面罩。
Use a pressure reducing regulator or separate control valve to safely discharge gas from cylinders. Use a check valve to prevent reverse flow into the cylinder.
使用减压调整器或单个的控制阀来安全地从钢瓶中排出气体。采用止回阀，防止回流入钢瓶。
Must not be smaller than the pipe size of the relief valve or have any reducing coupling installed in the discharge line.
不能小于安全阀的管道口径，也不能在排泄管上安装任何缩径管接头。
Some conclusion of reducing the resistance coefficient of bottom valve in respect to structure and parameters is presented.
在结构、参数方面得出了一些降低底阀阻力系数的结论。
To prevent misuse, and some special pressure reducing valve and the cylinder with a special connection between the mouth.
为了防止误用，有些专用减压阀与钢瓶之间采用特别连接口。
It is certainly worse by the pressure reducing valve , hydraulic throttle valve and the short form of three parts.
它由定差减压阀，液动换向阀和简式节流阀三部分组成。
The structure and principle of a new type of direct high pressure electric-pneumatic proportional reducing pressure valve with electric feedback is proposed.
介绍一种新型的直动式电反馈高压电气比例减压阀的结构原理。
Analyze the relationship between flow, pressure, pressure differential and valve opening of pressure reducing valves.
分析了减压阀的流量、压力、压力差和阀门开度的关系。
Pressure control valve with pressure reducing valve, safety valve and the sequence of three kinds of valves.
压力控制阀有减压阀、安全阀和顺序阀三种。
No relief valve is required where two pressure reducing valves are installed.
如果装上两个减压阀，就不需要安全阀。
Close the reducing valve of helium steel cylinder and the monoblock pump of the molecular pump group.
关闭氦气钢瓶的减压阀和分子泵组的直联泵。
Cooperated with RD safety circulating valve, it can entirely take the place of APR-M2 tool with the character of accurate sampling, reducing construction period, simple and safe sampling etc.
与RD安全循环阀配合使用，完全可以替代APR-M_2工具，具有取样准确、缩短施工工期，取样过程简单、安全等特点。
It includes signal output gauge and pressure reducing valve.
包括信号输出压力表和减压阀。
The chief products include: Bellows seal globe valve, Free-float steam trap, Pilot pressure reducing valve, Pneumatic control valve, Self-acting temperature-sensing valve, Cyclone separator etc.
目前工厂生产的主导产品有：波纹管密封截止阀、自由浮球疏水阀、先导式减压阀、气动调节阀、自作用式温控阀、汽水分离器等。
The valve has the four functions of flow measure, flow checking, recirculating control and multistage pressure reducing.
该阀门有四个功能：流量测量、止回、再循环控制和多级降压。
The valve consists of a guard cage, spring, valve disc, retaining ring and seat. It can be combined with pipe fittings such as reducing couplings, drain elbows, etc.
阀由警戒装置、弹簧、阀碟、扣环和阀座组成，可以和许多管件连接，如缩径管接头、排水弯头等。
In view of the response lag in CVT ratio control, a control algorithm is proposed for compensating the response lag in proportional pressure reducing valve control.
针对系统固有的速比控制滞后，提出了能够补偿滞后的控制算法来对比例减压阀进行控制。
Air filtering pressure reducing valve, solenoid valve, valve location feedback device, valve gate locator, quick exhaust valce.
空气过滤器减压阀，电磁阀，阀位反馈装置，阀门定位器，快速排气阀。
The results of experiments indicated that the usage of buffer tank had good steady effects on the pressure in both sides of the reducing valve.
实验结果表明，缓冲罐的使用对减压阀前、后压力均能起到很好的稳定作用。
Aiming at the disadvantages of present loading system applying proportional relief valve or servo valve, loading system with 3-way proportional pressure reducing valve is proposed.
针对目前采用比例溢流阀和伺服阀加载存在的不足，提出在钢坯修磨机上采用比例三通减压阀加载。
But note that this cannot be a long-term work pressure reducing valve, relief valve can be installed in the piping shall be separately when necessary.
但注意本安全阀不能作减压阀的长期工作，需要时可在管路上另行安装。
Suggested opening the user can freely adjust the size, the appropriate valve size increases, and thus play a role in reducing the wear and tear.
提议用户在可以开度自在调节的规模内，适当增大阀门的口径，从而起到减小磨损的作用。
Hydraulic control valve is not enough energy emissions will cause condensation water can not discharge in time, reducing the thermal efficiency of heating equipment.
水力控制阀排放能量不够，调节阀会造成凝结水不能及时排出，降低加热设备的热效率。
The main products are: gate valve, butterfly valve, ball valve, piston valve, globe valve, hydraulic control valves, pressure reducing valve such as the eight series over 100 kinds of specifications.
目前主要产品有：闸阀、蝶阀、球阀、柱塞阀、截止阀、水力控制阀、减压阀等八大系列100多种规格。
The main valve body of the novel three-way pressure reducing valve uses a 10 path electro-hydraulic valve body, has strong universality, and reduces processing difficulty and manufacturing cost;
本发明主阀体借用10通径电液动阀体，通用性强，降低了加工难度和制 造成本；
Special control valves including: temperature and pressure reducing control valves, automatic recycle control valve, minimum flow control valves, etc.
特种控制阀有：减温减压调节阀、自动再循环控制阀、最小流量控制阀等。
Special control valves including: temperature and pressure reducing control valves, automatic recycle control valve, minimum flow control valves, etc.
特种控制阀有：减温减压调节阀、自动再循环控制阀、最小流量控制阀等。
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