本文讨论黎曼流形里一般余维的常数平均曲率的子流形为全脐子流形的充要条件。
In this paper, we get a necessary and sufficient condition for a generalcodimensional submanifold with constant mean curvature in a Riemannian mani-fold to be a totally umbilical submanifold.
余上三层，塔身每面镌有佛像一尊，全伽趺坐式，形象生动。
On each face of the tower body of the remaining three floors, there is a Buddha statue engraved on it, all sitting there, very vivid.
“他们也存在跟美剧主角一样的问题，很难找到女朋友或跟女孩子讲话，因为他们的生活全被学习填满了，非常缺乏社交经验。” 余文婷说。
"They themselves were having exactly the same issue as the guys in the show, of finding girlfriends and talking to girls, because their life is full of work and lacks a social aspect, " Yu says.
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