Lying or situated in two tangent planes. Also n., a biplanar node.
| 单词 | θ115818 | 
| 释义 | the world > relative properties > number > geometry > surface > 			[adjective]		 > relating to plane surfaces > characterized by or situated on specific planes (5)		 biplanar1849 Lying or situated in two tangent planes. Also n., a biplanar node. coplanar1862 Situated or acting in the same plane. uniplanar1863 Mathematics. Designating a point at which the tangents to a curve coincide so as to form a single line or plane. Cf. unode, n. Now rare. trisquare1889 ‘three-square; having three equally wide plane faces’ (Cent. Dict. Suppl. 1909). orthotropic1943 Engineering. Having three mutually perpendicular planes of elastic symmetry at each point. | 
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