“自行”的概念、定义、翻译、参考文献-科学参考

单词	自行
释义	自行 Encyclopedia 理学天体测量学释 proper motion自行恒星在一年内沿着垂直于视线方向走过的距离对观测者所张的角度。其单位为角秒/年。 Astronomy 全称：proper motion。缩写：P.M.自行
随便看	camellia oil camellia oleifera seed oil Camellias camel meat camel milk Camelopardalis Camel Spring camel tour camel wool Camel Xiangzi camera camera and photo accessories camera-based visibility meter camera calibration camera cleaning kit camera control unit camera lens cameraman camera motion control system "camera-pen" camera position camera-stabilizer camera station Camerata camera tube

科学参考收录了854744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。