The company that handles all the US’s national security satellite launches has outlined audacious plans to end its reliance on Russian rocket engines within four years and slash the cost of launches by at least half.
承接美国所有国家安全卫星发射业务的联合发射联盟(United Launch Alliance，简称ULA)，提出了十分大胆的计划，打算在4年内结束对俄罗斯火箭发动机的依赖，并将发射成本大幅削减至少一半。
您已阅读8%（317字），剩余92%（3774字）包含更多重要信息，订阅以继续探索完整内容，并享受更多专属服务。