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□□2011年10月28日,德尔他-2运载火箭从范登堡空军基地成功发射了“国家极轨业务环境卫星系统预备项目”(NPP)卫星。NPP卫星是美国地球观测系统(EOS)计划中的一项,也用于完成美国“国家极轨业务环境卫星系统”(NPOESS)的技术验证任务,为长期的气候研究和实时的气象预报提供数据支撑。
□ □ On 28 October 2011, the Deltas -2 launch vehicle successfully launched the National Polar Orbital Environmental Satellite System Preparation Project (NPP) satellite from Vandenberg Air Force Base. The NPP satellite is part of the United States Earth Observation System (EOS) project and is also used to complete the technical verification mission of the United States National Polar Orbit Environmental Satellite System (NPOESS) for long-term climate research and real-time weather forecasting Provide data support.