The ventilation fan switch on the button panel does not work here.

掣板上的抽风机开关掣在这里并不能运作.

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Regeneration production of ventilation fan.

换气扇的换代产品.

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Yi – he ventilation fan and cooling pad, best efficient and economic temperature drop measure in summer.

益和“风机-湿帘”的纵向通风降温组合是最经济,有效的温室夏季降温措施.

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Please conserve water & energy . Switch off the air - conditioner & ventilation fan & turn off the tap before leaving.

请节省水电,离开前请关上冷气机 、 抽气扇 、 电灯 及 水制等.

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Ventilation fan is an indispensable equipment in the modern mine to guarantee the safety in production.

通风机是现代化矿井保证安全生产不可缺少的重要设备.

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A site test was conducted for the ventilation supply capacity of the main ventilation fan.

结果表明,主要通风机与现有通风网络不匹配是制约矿井增风的主要原因.

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