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What is another word for focal ratio?

4 synonyms found

Pronunciation:

[ fˈə͡ʊkə͡l ɹˈe͡ɪʃɪˌə͡ʊ], [ fˈə‍ʊkə‍l ɹˈe‍ɪʃɪˌə‍ʊ], [ f_ˈəʊ_k_əl ɹ_ˈeɪ_ʃ_ɪ__ˌəʊ]

Synonyms for Focal ratio:

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