oriented sphere 中文意思是什麼
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In the third second, we study a closed oriented submanifold with parallel mean curvature vector field in a sphere. let s = s - nh2. we fist obtain a pinching theorem on 5
第三節中研究了歐氏球面中具有常平均曲率向量子流形，獲得兩個結果，其中一個結果推廣了h -
In some ways, an electron is just like such a spinning sphere of charge ? an electron has a quantity of angular momentum ( its “ spin ” ) and an associated magnetism, and in an ambient magnetic field its energy depends on how its spin vector is oriented
就某種意義而言，電子可類比於一個旋轉的帶電小球：它帶有角動量（就是自旋）以及伴隨而來的磁性，而它的能量是由自旋向量與外加磁場的關系來決定。
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