美国全国研究委员会称，美国空间监测网跟踪并登记在册的太空垃圾数量在2006年12月为9949个，而在2011年7月就上升到了16094个。
The amount of orbital debris tracked by the US Space Surveillance Network jumped from 9, 949 cataloged objects in December 2006 to 16, 094 in July 2011, the National Research Council said.
本文以上海市建设与交通委员会的“上海市地下空间信息平台建设规划与运行管理研究”项目为支撑。
Papers is supported by the project "Research on the plan and running management of Shanghai Underground Space information platform ".
根据委员会 的研究结果，虽然没有在报告中提到，中国人正在进行一个空间计划。
The conclusion that the Chinese are engaged in an aggressive space program is my own, based upon the commission's findings, but not included in the panel's final report.
根据委员会 的研究结果，虽然没有在报告中提到，中国人正在进行一个空间计划。
The conclusion that the Chinese are engaged in an aggressive space program is my own, based upon the commission's findings, but not included in the panel's final report.
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