资料来源 : pyDict

钍土; 钍土; 氧化钍; 二氧化钍

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

Thoria \Tho"ri*a\, n. [NL. See {Thorite}.] (Chem.)
   A rare white earthy substance, consisting of the oxide of
   thorium; -- formerly called also {thorina}.