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beginner007 wrote: 圆柱坐标(cylindrical)螺旋线(Helical curve) r=t theta=10+t*(20*360) z=t*3 笛卡儿坐标下的螺旋线 x = 4 * cos ( t *(5*360)) y = 4 * sin ( t *(5*360)) z = 10*t
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