According to a spokesman for the national security council , the ground - based , medium - range ballistic missile knocked an old chinese weather satellite from its orbit about 537 miles above earth 据一位联邦安全会议发言人说,该陆基中程弹道导弹摧毁了在离地面537英里轨道上运行的一枚中国旧的气象卫星。
The report comes from a committee tasked with shaving $ 30 million from the nsf ground - based astronomy budget ? about 15 % of the total budget for the nsf ' s division of astronomical sciences 该报告出自一个以从国家科学基金地基天文学预算中削减3千万美元? ?大约占到国家科学基金天文科学部门总预算的15 % ? ?为任务的委员会。
This study is supposed that the fsk / psk signal is applied to ground - based searching radar , and the radar video returns which are modeled and simulated consist of target returns and clutter returns 本文研究的雷达视频回波信号,是假设采用地面搜索雷达的工作方式时所产生的回波信号,包括对目标信号和杂波信号的建模与仿真。
Foreign ministry spokesman liu jianchao said tuesday that beijing has informed washington of the january 11th test , in which it used a ground - based missile to destroy an aging chinese weather satellite 外交部发言人刘建超星期二说,北京已经告知华盛顿有关1月11号的测试事宜。中国在试验中用陆基导弹摧毁了一颗年久的气象卫星。
With the background of the space ground - based application system , this paper analyses and researches the management and distribution of the data information system . this selected topic has the important realistic meaning 论文以航天地面应用系统为研究背景,分析了航天地面数据信息系统的管理和发布,在选题上具有重要的现实意义。