短语词组短語equilateral polygon 正多邊形;等邊多邊形正多邊形equilateral arch [建]等邊拱;等角拱;對稱雙心拱equilateral E 等邊形;等邊的equilateral ĵ 等邊形equilateral U 等邊形equilateral projection 等距投影equilateral hexagon 正六邊形equilateral triangle 等邊三角形 返回 equilateral