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单词 光密度
释义 DEFINITIVE EXAMPLES 权威例句〔densitometer〕An apparatus for measuring the optical density of a material, such as a photographic negative.(光)密度计:测量材料,例如相片感光纸光密度的器械美国传统〔microdensitometer〕An extremely sensitive densitometer used to detect on a film or photographic plate spectrum lines too faint to be seen by the human eye.显微光密度计;测微密度计:一种极其敏感的密度计,用以测定电影或摄影感光版中人眼看不到的微弱光谱线美国传统
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