The exhaust vents are equipped with back-draft dampers to prevent dust from entering the enclosure when the unit is not running.
排气口装有逆行气流阻尼器，防止当系统没有运行时灰尘进入机箱。
The exhaust vents are equipped with back-draft dampers to prevent dust from entering the enclosure when the unit is not running.
排气口装有逆行气流阻尼器，防止当系统没有运行时灰尘进入机箱。
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