Construct rotating nephroid and three-cusped epicycloid while remaining orthogonal to each other.
作旋转肾脏线和旋转外摆线,且彼此持正交。
The envelope of moving line on the hypocycloid plane may be an epicycloid or cardioid and the...
摆线逆与切线成定角直线,其包络也是圆周渐开线.
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