本规范涵盖了一种电动单级叶片轴流风扇，在本文中称为“风扇”，用于为装甲军用车辆的乘员舱通风。

This specification covers an electric-powered, single-stage, vaneaxial fan, referred to herein as "fan", used to ventilate the crew compartment of an armored military vehicle.