As I cooked, the smoke set off the fire alarm.

当我做饭时，烟引起了火警。

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Smoke extraction fan is set as manual and automatic start.

排烟风机设置为手动和AUTO开启装置。

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Therefore, it is necessary to set up smoke rectifying formula versus the atmospheric factors.

因此，在我国建立大气因素烟度校正公式是很有必要的。

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Therefore, it is necessary to set up smoke rectifying formula versus the atmospheric factors.

因此，在我国建立大气因素烟度校正公式是很有必要的。

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