A thin sheet or strip of flexible material,such as a cellulose derivative or a thermoplastic resin,coated with a photosensitive emulsion and used to make photographic negatives or transparencies.

 
  • 胶片,一种柔软物质的薄片,例如赛璐珞制品或热塑性树脂,涂有感光乳剂并用来制像片底片或幻灯片。
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