“deep space datum”的概念、定义、翻译、参考文献-科学参考

单词	deep space datum
释义	deep space datum Encyclopedia 工学行星大地测量学释 deep space datum深空基准用于开展深空探测的各种模型、资料和协议的集合。主体内容包括国际天球参考架（ICRF）、国际地球参考框架（ITRF）、地球定向参数（EOP）等。
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