资料来源 : pyDict

凹版照相

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

Heliogravure \He`li*o*grav"ure\, n.
   A plate or picture made by the process of heliogravure.

Heliogravure \He`li*o*grav"ure\, n. [F. h['e]liogravure.]
   The process of photographic engraving.

资料来源 : WordNet®

heliogravure
     n : an intaglio print produced by gravure [syn: {gravure}, {photogravure}]