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单词 coplanar
释义

coplanaradj.

Brit. /kəʊˈpleɪnə/, U.S. /ˌkoʊˈpleɪnər/
Etymology: < co- prefix + Latin plānāris, < plānum plane n.3
Situated or acting in the same plane.
ΘΚΠ
the world > relative properties > number > geometry > surface > [adjective] > relating to plane surfaces > characterized by or situated on specific planes
biplanar1849
coplanar1862
uniplanar1863
trisquare1889
orthotropic1943
1862 G. Salmon Treat. Analytic Geom. Three Dimensions (1874) xiv. §510. 442 The number of points on the line such that the line is coplanar with two of the normals at the point.
1882 G. M. Minchin Uniplanar Kinematics 11 Coplanar concurrent forces.

Derivatives

coplanarity n. /-ˈærɪtɪ/ the property of being coplanar.
ΘΚΠ
the world > relative properties > number > geometry > surface > [noun] > plane > being planar or coplanar
planarity1850
coplanarity1901
1901 J. W. Gibbs & E. B. Wilson Vector Anal. ii. 68 The necessary and sufficient condition for the coplanarity of three vectors A,B,C none of which vanishes is A. (B × C) = O.
1979 Nature 26 July 301/1 The regular satellite systems of Jupiter, Saturn and Uranus are remarkable for the near coplanarity and circularity of their orbits.
This entry has not yet been fully updated (first published 1893; most recently modified version published online March 2022).
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adj.1862
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