Definition : A strophoid of a circle with the pole O at the centre of the circle and the fixed point P on the circumference of the circle.
定义:在圆索线,以圆心为极点,圆周一点为固定点,所作图形!
Definition : A strophoid of a circle with the pole O at the centre of the circle and the fixed point P on the circumference of the circle.
定义:在圆索线,以圆心为极点,圆周一点为固定点,所作图形!
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