A horizontal axis machine has its blades rotating on an axis parallel to the ground, whereas a vertical axis machine has its blades rotating on an axis perpendicular to the ground.
A horizontal axis machine has its blades rotating on an axis parallel to the ground, whereas a vertical axis machine has its blades rotating on an axis perpendicular to the ground.
水平轴的叶片绕水平向的轴旋转；垂直轴的叶片绕着与地面垂直的轴旋转示。