The model can be used as the basis of performance analysis and parameter optimization in the design of digital pressure regulating valves and as reference for control system design.

这一模型可作为数字调压阀设计过程中性能分析和参数优化的依据以及控制系统设计的参考。

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And according to the system make a choice for effective regulating valves.

并应根据供热系统选择有效的调节阀。

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The numerical equation about regulating valves resistance and discharge characteristics is established according to their relation.

根据调节阀阻力特性和流量特性的定义，建立了二者之间的数值关系方程。

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If the regulating valves fail or if the cabin structure is breached (by a failure of a door or window for example) then the pressure in the cabin would suddenly drop to match the outside air pressure.

BBC: NEWS | Europe | Dangers of aircraft decompression

These valves use a screw type valve instead of a simple flap, and they have a pressure regulating mechanism that will vent water to the ground if the intake pressure exceeds a set level.

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