| 释义 |
horograph Math.|ˈhɒrəgrɑːf, -græf|
[f. Gr. ὅρο-ς boundary + -graph.]
(See quot.)
1879Thomson & Tait Nat. Phil. I. i. §136 The curvatura integra of any given portion of a curved surface, is the area enclosed on a spherical surface of unit radius by a straight line drawn from its centre, parallel to a normal to the surface, the normal being carried round the boundary of the given portion. The curve thus traced on the sphere is called the Horograph of the given portion of curved surface. |