发布时间:2025-01-20 19:24:49
排风和新风一般按送/回风量30%设计即可。新风量要考虑室内人均新风负荷,一般按40m³/h每人计。
求问我家有一小电风扇扇叶时转时不转而且转速超慢我想知道什么原因自己如何修理
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