| 释义 |
Hurter and Driffield characteristic curve Hurter and Driffield characteristic curve[′hərd·ər ən ′dri‚fēld ‚kar·ik·tə¦ris·tik ′kərv] (graphic arts) A graph showing the dependence of the optical density of a photographic emulsion on the logarithm of its exposure to light. Abbreviated H-D curve. |