A system of coordinates in which a point is located by its distance and direction (Angle) from a fixed point on a reference line (called the polar axis).
一种用点离基准线上(称极轴)固定点的距离和方向(角度)来表示点位置的坐标系统。
The vertical axis wind power system has the advantages of low speed, easy to be fixed, low noise and high efficiency. It has wide applications and prospects for development.
垂直轴的离网型风力发电机系统具有低风速启动、安装使用方便、噪声低、效率高等特点，有着广阔的应用领域和发展前景。
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