幾何光學 的释义 | Babel Free
t͡ɕi²¹⁴⁻²¹ xɤ³⁵ ku̯ɑŋ⁵⁵ ɕy̯ɛ³⁵释义
geometrical optics (the study of light propagation as geometrical constructs, such as rays, instead of waves or photons)
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