“封面”概念、定义、翻译-科学时代

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

单词	封面
释义	广告学词汇手册封面 first cover; front cover
随便看	satellite Doppler positioning satellite Doppler shift measurement satellite earth observation satellite earth resource exploration satellite eclipse satellite electric simulator satellite electrooptical detector satellite engineering satellite environment satellite ephemeris satellite ephemeris satellite equipment connecting satellite fairing satellite feed satellite frequency satellite fundamental frequency satellite general layout satellite geodesy satellite geodesy satellite gradiometry satellite ground receive station satellite ground station satellite image satellite-inertial guidance integrated positioning system satellite information flow