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curvature (n.)
[curvature 词源字典]
1660s, from Latin
curvatura
"a bending," from
curvatus
, past participle of
curvare
"to bend" (see
curve
(v.)). In non-Euclidian geometry, from 1873.
[curvature etymology, curvature origin, 英语词源]
[curvature 词源字典]