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

Aqua fortis \A`qua for"tis\ [L., strong water.] (Chem.)
   Nitric acid. [Archaic]

资料来源 : WordNet®

aqua fortis
     n : acid used especially in the production of fertilizers and
         explosives and rocket fuels [syn: {nitric acid}]