A set of three superimposed plates or films with different colour sensitivities and kept in contact, so that three separation negatives can be…
| 单词 | θ229769 | 
| 释义 | society > leisure > the arts > visual arts > photography > plates and films > 			[noun]		 > set of (2)		 tripack1911 A set of three superimposed plates or films with different colour sensitivities and kept in contact, so that three separation negatives can be… bi-pack1924 In colour photography, a pack of two sensitive plates or films used to obtain colour separation.  | 
	
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