velograph造句

• The Silver was for rough tracing paper, and the Gold was for plastic film ( velograph or durables ).
• The tracing paper or velograph sheet would be placed on the Osalid sheet stuck onto the drawing board and the air brushed away.
• He then joined the Velograph Company, managed by Adolphe Langfier, as a projectionist, and began touring the country with films of such events as Queen Victoria's Diamond Jubilee.