英语词汇optical length怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

　

单词	optical length
释义	Definition of optical length in English: optical length noun The distance which in a vacuum would contain the same number of wavelengths as the actual path followed by a ray of light, equal to the product of the actual path-length and the refractive index of the medium if the latter is homogeneous. Origin Late 19th century. Definition of optical length in US English: optical length noun The distance which in a vacuum would contain the same number of wavelengths as the actual path followed by a ray of light, equal to the product of the actual path-length and the refractive index of the medium if the latter is homogeneous. Origin Late 19th century.
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更新时间：2025/1/30 1:21:07