Proper functioning of the device’s fans is vital for proper operation.

设备风扇的正常运转对设备的正常运行至关重要。

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The operation characteristics of axial-flow fans can be simulated and the gasping vibration can be calculated precisely with the model.

该模型能够真实地反映出轴流风机的运行特性，并能准确地计算出轴流风机的喘振工况。

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Fluid bearing fans have the advantages of near-silent operation and high life expectancy (comparable to ball bearing fans).

流体轴承球迷们的优点，接近无声的运作和高预期寿命(相比滚珠轴承风扇)。

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Ch Supt Matthew Greening told BBC News he thought the operation went well, and that the majority of fans had behaved themselves.

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"Hopefully, the bulk of fans will not be unduly troubled by the operation and we hope that what we are doing will help to make the game trouble-free, " he said.

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