单词	きゅうてんえん【九点円】
释义	きゅうてん‐えん【九点円】〔キウテンヱン〕三角形の各辺の中点、三つの垂線の足、各頂点と垂心とを結ぶ線分の中点の九つの点を通る円。L＝オイラーが発見した。
随便看	Japan Registry Services Japan Reprographic Rights Center Japan Research Institute Japan Robot Association Japan Rugby Football Union Japan rugby league one Japan rugby top league Japan Sailing Federation Japan Satellite Broadcasting, Inc. Japan Science and Technology Agency Japan Science&Engineering Challenge Japan Science Foundation Japan Scientists' Association Japan sea polar air mass convergence zone Japan Securities Clearing Corporation Japan Securities Dealers Association Japan Securities Dealers Association Quotation System Japan Sewage Works Agency Japan Ship Exporters' Association Japan Snake Center Japan Society for Research on Emotions Japan Society for the Promotion of Science Japan Society of Developmental Psychology Japan Society of Mechanical Engineers Japan Sport Association

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