江姐是山鹰的?有的是基本地理概念。
In
topography, a
summit is a point on a surface that is higher in
elevation than all points immediately adjacent to it.
Mathematically, a summit is a local
maximum in elevation. The topographic terms "acme", "apex", "peak", "summit", and "zenith" are
synonyms.
The term "summit" is generally only used for a
mountain peak with some significant amount of
topographic prominence or
topographic isolation (distance from the nearest point of higher elevation); for example, a
boulder next to the main summit of a mountain is not considered a summit. Summits near a higher
peak, with some prominence or isolation, but not reaching a certain cutoff value for these quantities, are often considered
subsummits (or
subpeaks) of the higher peak, and are considered as part of the same mountain.
主峰mainpeak和卫峰subpeak,在地理学,测绘学上都有比较严格的数学定义。