轨道科学公司计划于2010年第四季度开始进行COTS演示任务。
Orbital's COTS demonstration mission is scheduled to take place in the fourth quarter of 2010.
轨道科学公司计划在位于弗吉尼亚州Dulles和马里兰州Greenbelt的工厂完成“天鹅座”太空船和货物模块的开发、制造和集成。
Orbital plans to carry out the development, production and integration of the Cygnus spacecraft and cargo modules at company facilities in Dulles, Va., and Greenbelt, Md.
在我们的太阳系中,行星的轨道几乎是圆形的,这使得科学家们预测,其他恒星周围的行星也会位于圆形轨道上。
The nearly circular orbits of planets in our solar system led scientists to expect that planets around other stars would also reside in circular orbits.
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