The utility model relates to a power switch used for a ventilating fan and a special pulling switch used for the closure and the linkage of shutter blades.
本实用新型是一种用于换气扇的电源开关和百叶闭合连动的专用拉线开关装置。
The paper introduces the working principle of which frequency control technology is applied in energy-saving reformation for ventilating fan. The frequency control system was designed in detail.
介绍了利用变频调速技术对通风机进行节能改造工作原理及系统设计。
He suggested having a ceiling electric fan installed in the room. This would solve the problem of ventilating the room, for when the fan whirled, it would draw in fresh air.
他建议安装一台吊顶电风扇。这将解决房间通风问题，因为当风扇急速转动时，它将带进新鲜的空气。
This would solve the problem of ventilating the room, for when the fan whirled, it would draw in fresh air.
这将解决房间通风问题，因为当风扇急速转动时，它将带进新鲜的空气。
According to the problem existing in ventilating system, improvement process of BDK62 series mine well main fan system are introduced.
针对通风系统存在的问题，介绍了BDK62系列矿井主扇系统的改造过程。
In large warehouse, a control test of lowering temperature with exhaust fan and other equipment in lowering temperature, ventilating efficiency, air flow rate and moisture content was carried out.
用排气扇与各种通风方式对高大平房仓进行降温对比试验，将试验仓与对比仓的降温情况、通风效率、表观风速和水分变化进行比较。
The invention discloses a hidden smoke-exhaust ventilating integrated cooker, comprising a cooker cabinet, a panel, a bottom shell, a gasifier and a fan.
一种隐形式排油烟集成灶具，由灶柜、面板、底壳、燃烧器及配套装置、锅架和风机组成；
The invention discloses a hidden smoke-exhaust ventilating integrated cooker, comprising a cooker cabinet, a panel, a bottom shell, a gasifier and a fan.
一种隐形式排油烟集成灶具，由灶柜、面板、底壳、燃烧器及配套装置、锅架和风机组成；
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