如果两图形上的点一一对应,对应点的连线被某一平面垂直平分,那么称这两图形关于这个平面成平面对称。该平面称为对称平面.
一维平面对称爆轰波的推进具有周期性。
Periodicity advance model of 1 - D slab symmetry detonation wave is investigated.
一维平面对称爆轰波的推进具有周期性。
Periodicity advance model of 1-d slab symmetry detonation wave is investigated.
在n维欧氏空间内,给出了多元函数分别关于点、n-1维超平面对称的充要条件。
Necessary and sufficient conditions are given on the symmetry of points and n-1 dimensional hyperplane of function of many variables in then-dimensional Euclidean space.
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