In addition, a trim air line from the left mix chamber adds hot air to the flight compartment duct.

另外，从左混合舱出来的配平空气管道增加热空气给驾驶舱管道。

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A typical dual duct system would have 2 zone supply air paths - one for the hot air and one for the cold air - and 1 zone return air path.

而对于典型的双管系统，则由两条区域送风路径(一条用于热空气、一条用于冷空气)和一条区域回风路径组成。

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Atmospheric duct is one of the hot-topics and difficult problems in the propagation of electromagnetic waves in troposphere.

大气波导的影响是对流层电磁波传播研究的热点和难点问题之一。

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Coming a long way from its original shade of metal grey, duct tape now comes in more than 200 colours and patterns ranging from hot pink to zebra stripes.

BBC: In Ohio, duct tape designs take centre stage