harmonic mean [经] 调和平均数
- The study of2- harmonic space-like submanifolds in pseudo-Riemiann manifold has a sufficient condiction for the minimal submanifolds, which generalizes OUYANG Chong-zhen' s results of2- harmonic su
研究了伪黎曼流形的2-调和子流形,得到了伪黎曼流形的2-调和类空子流形成为极大的一个充分条件,推广了欧阳崇珍的伪黎曼流形中具平行平均曲率向量的2-调和子流形的相应结果.
harmonic mean[ noun ]
the mean of n numbers expressed as the reciprocal of the arithmetic mean of the reciprocals of the numbers
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