... 卫星标准频率和时间信号业务 standard frequency and time signal-satellite service 空间研究业务 space research service 业余业务 service ...
2
?太空研究业务
... 太空研究 space research 太空研究业务space research service 太空部分 space segment ...
双语例句
1
The paper advances a new basic category, that is, service interest from the Angle of interest and makes a research into it from many aspects following the clue of development of time and space.