中文翻译与英英解释

n.
七角形，七边形。
adj.
-al

a seven-sided polygon

In geometry, a heptagon is a polygon with seven sides and seven angles. In a regular heptagon, in which all sides and all angles are equal, the sides meet at an angle of 5π/7 radians, 128.

例句与用法

Electronic transport properties of single - wall carbon nanotube with pentagon - heptagon - pair defect
七边形缺陷的单壁纳米碳管的输运性质研究