The envelope of moving line on the hypocycloid plane may be an epicycloid or cardioid and the...
逆运
中与
切
成定角的直
,其包络也是圆周渐开
.
The envelope of moving line on the hypocycloid plane may be an epicycloid or cardioid and the...
逆运
中与
切
成定角的直
,其包络也是圆周渐开
.
Construct rotating nephroid and three-cusped epicycloid while remaining orthogonal to each other.
作旋转的肾脏和旋转的三瓣
,且彼此维持正交。
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