“Smith-Helmholtz law”的概念、定义、翻译、参考文献-科学参考

单词	Smith-Helmholtz law
释义	Smith-Helmholtz law [`smith `helm´hōlts ´lȯ] ^OPTICS For a single refracting surface of sufficiently small aperture, the product of the index of refraction, distance from the optical axis, and the angle which a light ray makes with the optical axis at the object point is equal to the corresponding product at the image point.
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