资料来源 : pyDict

套色版

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

Process plate \Proc"ess plate\
   (a) A plate prepared by a mechanical process, esp. a
       photomechanical process.
   (b) A very slow photographic plate, giving good contrasts
       between high lights and shadows, used esp. for making
       lantern slides.