“sphere”的概念、定义、翻译、参考文献-科学参考

单词	sphere
释义	sphere [sfir] ^MATHEMATICS 1. The set of all points in a euclidean space which are a fixed common distance from some given point; in euclidean three-dimensional space the Riemann sphere consists of all points (x,y,z ) which satisfy the equation x²+y²+z²=1. 2. The set of points in a metric space whose distance from a fixed point is constant.
随便看	surface drainage surface drilling surface duct surface-effect ship surface energy surface finish surface fire surface flow surface force surface friction surface gage surface geology surface grinder surface hardening surface harmonics surface hoar surface ignition surface integral surface inversion surface irrigation surface layer surface leakage surface lift surface machining surface magnetic wave

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。