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单词 subradius of curvature
释义

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subradius of curvature
1. Geometry. In full subradius of curvature. A straight line which extends horizontally from the centre of curvature of a particular point of a curve to a perpendicular drawn from that point to the x-axis. Obsolete. rare.Cf. radius of curvature n. at curvature n. Phrases a.
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the world > relative properties > number > geometry > line > [noun] > specific relating to a curve
asymptote1656
radius1657
radial1702
subradius1826
1826 T. Jephson Fluxional Calculus I. xi. 392 The sub-radius of curvature is a line drawn from the centre of the circle of curvature perpendicular on the ordinate... Thus.. pc is the radius, ck the sub-radius.
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