... pressure feed system 压力输给系统 pressure flap 均压阀 pressure foredrag 头部压差阻力 ...
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air pressure equalizing flap 均压气门
pressure venting flap 泄压活门
air-pressure equalizing flap 均压气门
oil-pressure operated flap gate 液压翻板门
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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The device is a hinged flap connected to the sea-bed which uses wave power to deliver high-pressure water to an onshore turbine.
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