To this point, the KEI has been essentially an experiment in rocketry, and has done little except make work for Northrop Grumman.

 
  • 就这一点来说,KEI本质上已经变成了一个火箭技术试验,而且除了给诺斯罗普格鲁曼公司工作以外很少取得什么成果。
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