“proper motion”的概念、定义、翻译、参考文献-科学参考

单词	proper motion
释义	proper motion [`präp·ǝr `mō·shǝn] ^ASTRONOMY That component of the space motion of a celestial body perpendicular to the line of sight, resulting in the change of a star's apparent position relative to that of other stars; expressed in angular units.
随便看	newly formed ice Newman-Penrose formalism Newman projection new moon New Red Sandstone new snow Newson's boring method newsprint newt newton Newton-Cotes formulas nitrophosphate nitrophyte nitroso nitrostarch nitrourea nitrous acid nitrous oxide nitroxylene nitryl halide nitryl ion nival nival gradient nival surface nivation

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。