ground-based observation [气象] [天] 地面观测 ; 陆基观测
astronomical ground based observation 地面天文观测
evidence-based observation 循证观察
observation-based learning 基于观察的学习
based on observation 基于观察
observation-based 基于观测
based on observation data 基于实测资料的
Space weather is a new inter-discipline which combines space science, space borne and ground based observation technologies.
空间天气是一门把空间科学与天基、地基技术系统紧密结合，多学科交叉的新兴学科。
On the aspect of observation time, it has limited efficiency for low earth orbit target space-based observation, and good efficiency for high earth orbit observation.
在可见时间方面，天基空间目标光学监视系统对低轨目标的监视能力有限，而对高轨目标具有良好的监视性能。
The conditions required to construct, a quasi-inertial celestial reference frame are discussed, and several cases, in which if the ground-based observation can satisfy, arc enumerated.
本文叙述了建立准惯性天球参考架应满足的条件，列举了几种地面观测能否满足这些条件的情况。
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