| 1. | A family of parallel lines cut the conic .
有一组平行线与圆锥曲线相交。 |
| 2. | Consider a family of parallel lines that cut the conic .
设有一组平行线与圆锥曲线相交。 |
| 3. | The platonic school's most significant discovery was the conic sections .
Plato学派的最重要发现是圆锥曲线。 |
| 4. | Furtherly spread the two natures of circular cone curve
对圆锥曲线两个性质的推广的再推广 |
| 5. | Extending a group of united nature of conic
圆锥曲线一组统一性质的推广 |
| 6. | Still probing into several interesting properties of conical curve
圆锥曲线几个有趣性质再探 |
| 7. | A simple proof of a plane geometric problem
圆锥曲线的一个共同性质 |
| 8. | Problems about the conical section chord through a special point
关于过特殊点的圆锥曲线弦的问题 |
| 9. | Constructing directrix for conic curve
圆锥曲线准线的几何作图 |
| 10. | The platonic school ' s most significant discovery was the conic sections
Plato学派的最重要发现是圆锥曲线。 |
