有机减感染料在直接正性照相乳剂中的应用大大改善了其反转速度。
The rever-sal speed increases greatly when an organic desensitizing dye is used.
颗粒：群集照相乳剂上的银粒。感光快的乳剂，其颗粒较感光慢的为粗。
Grain: Cluster of silver particles in the photo-graphic emulsions. Emulsions with faster speed have larger grains than emulsions with slower speed.
影像，潜影：由于光的作用在摄影机或印片机内在照相乳剂上所形成的不可见影像。
Image, Latent image: the invisible image formed in a camera or printer by the action of light on a photographic emulsion.
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