释义 |
biplanar, a. (and n.) Math.|baɪˈpleɪnə(r)| [f. next + -ar1: cf. planar.] Lying or situated in two tangent planes. Also n., a biplanar node.
1849G. Salmon in Cambr. & Dublin Math. Jrnl. IV. 257 The two tangent planes at the biplanar point. Ibid., One [plane] through both conical points (1 × 4), one through the biplanar alone (3). 1927H. P. Hudson Cremona Transformations xii. 238 With a d[ouble] p[oint], the parts are both planes, and the singularity is called a binode or biplanar point. |