UID:306831
UID:309032
UID:309440
UID:303891
UID:229853
UID:299015
UID:307955
UID:310167
UID:309095
maiwudi:CRVT表示面的曲率,可以設它為變量,曲率半徑也就變成變量了。曲率半徑=1÷曲率。 (2017-05-07 14:19) ?Xl;>}zj