...∩ E = , 若对点 P 的任一邻域 U(P) 既含 E中的内点也含 E则称 P 为 E 的内点(interior point);则称 P 为 E 的外点(outer point) ;则称 P 为 E 的边界点(boundary point).
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outer dead point 外死点 ; 外止点
outer Lagrangian point 外拉格朗日点
method of outer singular point 域外奇点法
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Among other effects, it is believed to contribute to correcting the non-vertex presentation of the fetus when applied at a specific acupuncture point (BL67 Zhiyin) located at the outer corner of the little toenail.
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