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Acnode

資料來源 : pyDict

極點; 孤點; 孤立點

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Acnode \Ac"node\, n. [L. acus needle + E. node.] (Geom.)
   An isolated point not upon a curve, but whose co["o]rdinates
   satisfy the equation of the curve so that it is considered as
   belonging to the curve.
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