資料來源 : pyDict

電影放映機; 雙色網目版印刷

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Duograph \Du"o*graph\, n. [L. duo two + -graph.]
   (Photo-engraving)
   A picture printed from two half-tone plates made with the
   screen set at different angles, and usually printed in two
   shades of the same color or in black and one tint.