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词汇	reentrant angle
释义	reentrant angle 也作 re-entrant anglen.Mathematics（名词）【数学】angle CBA is a reentrant angleClarinda/Academy Artworks In an irregular polygon, an interior angle that is greater than 180° and whose apex faces into the polygon.凹角：在不规则多边形中超过180度，而且其顶点指向多边形内部的内角
随便看	Fu Manchu mustache fumarate fumarates fumaric acid fumarole fumaroles fumatorium fumatoriums fumatory fumble fumbled fumbles fumbling fume fumed fumerole fumes fumigant fumigants fumigate fumigated fumigates fumigating fuming fumitories

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