The SPRD will automatically open as the air pressure in the duct system increases, in order to prevent the reduction of air flow and excessive noise and velocity through the duct system.
当管道系统空气压力增加时，SPRD会自动开启，以防止管道系统中空气流动的减少和过度噪音和速度。
For volumetric gas reservoir, gas well absolute open flow (AOF) is reduced with the decrease of formation pressure.
对于定容气藏，气井的绝对无阻流量随地层压力的下降而降低。
Open flow potential will drop down with decline of formation pressure in a gas well.
随着气井地层压力的下降，其无阻流量相应降低。
A pressure drop through the bit maintains the tool in the open position while the return springs close the pistons when flow decreases.
随后钻头处的压力降使扩眼工具处于打开状态，当流速下降时弹簧将活塞收回至原处。
The result shows that in big pressure ratio and valve open conditions, gas fluctuation in valve seat throat is small and flow is steady.
在大压比、大升程条件下，喉部各测点的脉动压力不大，流动稳定。
GUD electric high vacuum (pressure) ball valves USES electric device to drive the stem and ball for open and close, thus to put through or cut off the medium flow in vacuum (pressure) pipeline.
GUD型电动高真空(压力)球阀是以电动装置驱动阀杆与球芯来执行启闭动作，达到接通或切断真空(压力)系统管路中的介质流。
Note: This setup procedure is for tractors with closed-center or pressure compensated flow hydraulic systems. For open-center hydraulic systems contact your dealer for instructions.
注意：这个设定程序是针对带有闭心液压系统或者有压力补偿系统的拖拉机的。对于开心液压系统请联系你的经销商并向他索取资料。
VTLEBF01 electric high vacuum (pressure) ball valve USES electric device to drive the stem and ball for open and close, thus to put through or cut off the medium flow in vacuum (pressure) pipeline.
VTLEBF01型电动高真空(压力)球阀是以电动装置驱动阀杆与球芯来执行启闭动作，达到接通或切断真空(压力)系统管路中的介质流。
Shown from research, the main reason for smaller absolute open flow is the decrease of average formation pressure during well testing. A new method for …
研究表明，测试期间地层平均压力的下降是导致该气田无阻流量计算偏低的主要原因。
Shown from research, the main reason for smaller absolute open flow is the decrease of average formation pressure during well testing. A new method for processing gas well testing da...
研究表明，测试期间地层平均压力的下降是导致该气田无阻流量计算偏低的主要原因。
GUD electric high vacuum (pressure) ball valve USES electric device to drive the stem and ball for open and close, thus to put through or cut off the medium flow in vacuum (pressure) pipeline.
GUD型电动高真空(压力)球阀是以电动装置驱动阀杆与球芯来执行启闭动作，达到接通或切断真空(压力)系统管路中的介质流。
The pressure is too high . we have to open flow .
压力太高，我们不得不放喷。
This valve is normally automatic work, in a direction of flow of fluid under pressure, open the flap valve;
通常这种阀门是自动工作的，在一个方向流动的流体压力作用下，阀瓣打开；
When the valve is fully open, flow capacity is big, pressure loss is small, and the medium would not deposit in the body cavity.
全开时阀门流通量能力大，压力损失小，且介质不会沉积在阀体中腔。
When the valve is fully open, flow capacity is big, pressure loss is small, and the medium would not deposit in the body cavity.
全开时阀门流通量能力大，压力损失小，且介质不会沉积在阀体中腔。
应用推荐