资料来源 : pyDict

二十进制的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Vicenary \Vic"e*na*ry\ (?; 277), a. [L. vicenarius, fr. viceni
   twenty each; akin to viginti twenty.]
   Of or pertaining to twenty; consisting of twenty.

资料来源 : WordNet®

vicenary
     adj : of or relating to or based on 20