ravelin
ra
ˈræ
ve
vi
lin
ˌlɪn
lin
British pronunciation
/ɹˈævɪlˌɪn/

“ravelin”的英语定义和含义

Ravelin
01

棱堡, 半月堡

a triangular or polygonal fortification with a raised platform located outside the main defensive walls of a fortress, used to defend the approach and provide additional protection against enemy attacks
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