“precise ephemeris service”的概念、定义、翻译、参考文献-科学参考

单词	precise ephemeris service
释义	precise ephemeris service Encyclopedia 工学GNSS精密定位释 precise ephemeris service精密星历服务利用卫星系统地面控制站或地面跟踪站观测数据，按照一定的数学方法计算的卫星星历，对外提供精密定位服务。
随便看	fin cooling f incrementing path f-incrementing path f-incrementing path; f-augmenting path find finder finder chart finder of silver halide film type camera finderscope finder telescope finding finding chart finding list Finding Nemo finding replacements for vacant places in soldiery Finding Resources for the Motherland find meteorite Fine fine fine adjustment fine analysis fine art Fine Art Photography Fine Art photography Fine Arts Museum in Xi’an Academy of Fine Arts

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。