reversible axial flow fan

例句：

1. 1.This reversible axial flow fan is designed to improve airflow efficiency in a room.
   这款可逆轴向流动风扇旨在提高房间内空气流通效率。
2. 2.The new design of the reversible axial flow fan has greatly improved its performance.
   新型可逆轴向流动风扇的设计大大提高了其性能。
3. 3. In cold winter days, the reversible axial flow fan helps to keep the house warm and comfortable.
   在寒冷的冬天，可逆轴向流动风扇帮助保持房屋温暖舒适。