Now we have the recirculation system.

现在我们有再循环系统。

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Fan speed resistor is an important functional unit in the recirculation system of vehicle air conditioning.

鼓风机调速电阻是汽车空调冷热循环系统中的功能部件。

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Air also flows into the lavatories from the cabin air distribution and recirculation system through individual air outlets.

空气也可以从客舱空气分配和再循环系统，通过单独的出口，流向厕所。

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"You have to get the recirculation system up and functioning so they can cool that water in the normal way, " said Gary Was, a nuclear engineering professor at the University of Michigan and a CNN consultant.

CNN: STORY HIGHLIGHTS