Axial flow type and ballistic type. The speed of impeller depends on the speed of wind.
Axial flow type and ballistic type. The speed of impeller depends on the speed of wind.
叶轮有两种：轴流式、冲击式。叶轮受到大小不同的风力就有不同的转速。
Axial flow type and ballistic type. The speed of impeller depends on the speed of wind.
叶轮有两种：轴流式、冲击式。叶轮受到大小不同的风力就有不同的转速。