Ceiling ducts to direct the air from the blower to the rear of the trailer.

顶部输送管会将空气从风扇吹送到拖车后面。

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Please fit the ventilation ducts.

请装上通风管道。

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Aircraft engine Nacelle flexible ducts.

飞机发动机短舱挠性管道。

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One of the air-ducts has become blocked.

有一条输气管堵塞了。

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One of the air-ducts has become blocked.

有一条输气管堵塞了。

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