“projective plane”的概念、定义、翻译、参考文献-科学参考

单词	projective plane
释义	projective plane [prǝ`jek·tiv `plān] ^MATHEMATICS 1. The topological space obtained from the two-dimensional sphere by identifying antipodal points; the space of all lines through the origin in euclidean space. 2. More generally, a plane (in the sense of projective geometry) such that (1) every two points lie on exactly one line, (2) every two lines pass through exactly one point, and (3) there exists a four-point.
随便看	normoblast normochromatic normochromic normocyte normothermia norphytane Norris-Eyring reverberation formula norte north North America North American anticyclone North American blastomycosis North American high North American Nebula North American presentation-level protocol syntax North Atlantic Current northbound node North Cape Current Northeast Drift Current northeaster northeast storm northeast trades North Equatorial Current norther northerly turning error

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。