Based on the theory of ac fluid networks, the frequency response characteristics of a hydraulic fluid system were analyzed.

根据交流流体网络理论，通过单传管路的传递函数阵分析了液压流体系统的频率响应特性。

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An electric motor propels the bus, but its regenerative braking system also pressurizes hydraulic fluid.

一个电动发动机推动这辆公交车，但其再生制动系统也对液压流体加压。

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T he function of filters in a hydraulic system is to maintain fluid cleanliness.

液压系统中过滤器作用是维持流体的清洁度。

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E-Steer which eliminates the need for the traditional power-steering system's hydraulic pump, hoses, fluid and belts.

ECONOMIST: MONITOR

Before landing, the flight crew were not aware the nose wheel steering system was not working, as the hydraulic fluid level was low.

BBC: NEWS | Europe | Isle of Man | Air crew criticised for fire risk