Pressure is low or no pressure, high viscosity gear wheel pump don't inhale the liquid or leakage is serious.

压力低或无压力，说明高粘度齿齿轮泵没有吸入液体或泄漏严重。

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Check the gear wheel pump at this time of the actual speed, pump and motor connection and power matching, etc.

此时应检查齿齿轮泵的实际转速、泵与电动机的联接及功率匹配情况等。

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High viscosity gear pump does not generate pressure, it is only the output flow. Pressure is low or no pressure, high viscosity gear wheel pump don't inhale the liquid or leakage is serious.

高粘度齿轮泵并不能产生压力，它只是输出流量。压力低或无压力，说明高粘度齿轮泵没有吸入液体或泄漏严重。

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Controlling steering using electric motors also helps to reduce fuel consumption and hence carbon-dioxide emissions. (Electric motors require power only when the steering wheel is turned, whereas a hydraulic pump drains power from the engine all the time.) Ford reckons 90% of its cars will have electronic steering within three years.

ECONOMIST: Rational consumer