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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After filtration and heating of air into the dryer at the top of the air distributor, hot air spirals into the drying chamber evenly.

空气经过过滤和加热，进入干燥器顶部空气分配器，热空气呈螺旋状均匀地进入干燥室。

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About 1885, a process by which natural gas heats a roasting chamber and hot air is the only heating medium was developed, and this remains the best and most popular method of roasting coffee.

大约1885年，用天然气加热烘焙箱、以热空气作为唯一的热媒介的工艺就已经被开发了，这种工艺至今仍是最好最普及的咖啡烘焙法。

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