Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版：英文原文完整保留，中文紧随对应单元；术语采用 v20260916 确认表，自动语义审校结果可追溯。

Parabola

抛物线
A parabola is a conic section formed by a slice that meets condition that the eccentricity is e=1.
The symbol p represents the distance of closest approach to the single focus.
抛物线是通过一个切口形成的圆锥曲线，该切口满足偏心率e=1的条件。符号p表示到单个焦点的最近距离。

Each of the conic sections can be described in terms of a semimajor axis a and an eccentricity e. Representative values for these parameters are shown along with the types of orbits which are associated with them.

每个二次曲线都可以用半长轴a和偏心率e来描述。这些参数的代表性值如图所示，并列出了与之相关的轨道类型。
 Index
索引
 
HyperPhysics*****HyperMath*****Geometry
HyperPhysics ***** HyperMath ***** 几何
R Nave
 Go Back
返回