Ravelin
[rævlin]
解釋/意思:
(n.) A detached work with two embankments which make a salient angle. It is raised before the curtain on the counterscarp of the place. Formerly called demilune, and half-moon.
整理:薇尔玛
解釋/意思:
n. a detached work with two embankments raised before the counterscarp.
編輯:韦德