单词 | quadriplanar |
释义 | > as lemmasquadriplanar quadriplanar adj. Brit. /ˌkwɒdrᵻˈpleɪnə/ , U.S. /ˌkwɑdrəˈpleɪnər/ Geometry (now rare) involving four planes; spec. designating a system of homogeneous coordinates in which a point is defined by its distances from four fixed planes.ΚΠ 1853 Philos. Trans. (Royal Soc.) 143 511 A homogeneous quadratic function of four variables used to denote a surface referred to quadriplanar or tetrahedral coordinates. 1882 G. Salmon Treat. Analytic Geom. Three Dimensions (ed. 4) 23 We shall use these quadriplanar coordinates, whenever..our equations can be materially simplified. 1998 Jrnl. Geochem. Explor. 63 125/2 A computer program relating quadriplanar to three-dimensional Cartesian coordinates. < as lemmas |
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