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虚圆点实际上是一退化的二次曲线。
The circular points are really a degenerate conic.
youdao
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重虚圆点四次曲线是很重要的一类高次平面曲线。
Bicircular quartic is a very important classics of higher plane curves.
youdao
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重虚圆点四次曲线是很重要的一类高次平面曲线。
Bicircular quartic is a very important classics of higher plane curves.
youdao