sphe·rom·e·ter /sfɪrˈɑmətɚ/
球徑計
sphe·rom·e·ter /sfɪrˈɑmətɚ/ 名詞
Sphe·rom·e·ter n. Physics An instrument for measuring the curvature of spherical surface, as of lenses for telescope, etc.
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spherometer
n : a measuring instrument for measuring the curvature of a
surface