空调外机风扇的电机和风叶之间的固定螺钉松脱，这一故障的维修方法十分简单，只需重新将扇叶和电机之间的固定螺丝重新扭紧即可。
Fixed screw between air-conditioning fan motor and fan blades loose and maintenance method of this fault is very simple, only needs to be fixed between the screw blades and motor re tighten.
滑油散热器和冷却风扇匹配设计是直升机外滑油系统设计的关键问题。
Match design of the oil radiator and the cooling fan is the key of the helicopter outer oil system design.
风扇环形外腔产生的正压湍流射流在内腔负压汇流作用下形成锥形风幕流场，将处于流场范围内的气体及粉尘严密封闭起来，使安全生产得到保障。
The tapered windscreen flow field of the fan is composed of the outer ring turbulent jet and the inner sink, which tightly closes gas and dust to ensure the safety production.
许多风扇也可有不同的外框设计。
一种风扇包括扇框、马达底座、叶轮、导流组件与至少一外扩部。
A fan comprises a frame, motor base, impellers, flow guide parts and at least one flare opening.
以及一风扇，安装于该机壳内及电性连接该主机板，并具有一第一风扇出口，且能经由该第一风扇出口输出气流至该机壳外。
The fan is electrically connected to the main board, has a fan outlet and is capable of outputting airflow through the fan outlet to the outside of the housing.
以及一风扇，安装于该机壳内及电性连接该主机板，并具有一第一风扇出口，且能经由该第一风扇出口输出气流至该机壳外。
The fan is electrically connected to the main board, has a fan outlet and is capable of outputting airflow through the fan outlet to the outside of the housing.
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