“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	nonnegative semi-definite matrix nonnegative solution nonnegative splitting nonnegativity nonnegativity condition nonnegativity requirement non nesting matching non-nesting matching nonnesting matching non nesting partition non-nesting partition nonnesting partition non neutral plasma non-neutral plasma nonneutral plasma non-Newtonian behavior non-Newtonian flow non-Newtonian flows non Newtonian fluid non-Newtonian fluid non-Newtonian fluid mechanics non-Newtonian porous flow non Newtonian property of blood non-Newtonian property of blood non-Newtonian system

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。