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 demilune ['dɛmɪ`lun添加此单词到默认生词本
n. 半月形堡垒

[医] 半月体, 新月[细胞], 新月形的


  1. However, the demilune image should be recognized as an independent image.
    新月意象可以从月亮意象中独立出来成为独立的意象体。



Demilune \Dem"i*lune`\, n. [F. demi- lune.]
1. (Fort.) A work constructed beyond the main ditch of a
fortress, and in front of the curtain between two
bastions, intended to defend the curtain; a ravelin. See
{Ravelin}.

2. (Physiol.) A crescentic mass of granular protoplasm
present in the salivary glands.

Note: Each crescent is made of polyhedral cells which under
some circumstances are supposed to give rise to new
salivary cells.

Ravelin \Rave"lin\ (r[a^]v"l[i^]n; 277), n. [F.; cf. Sp.
rebellin, It. revellino, rivellino; perhaps fr. L. re- again
+ vallum wall.] (Fort.)
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}.

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