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指出现有太空运载火箭的固有缺陷,着重介绍美国X-33缩比实验型和“冒险星”实用型2种可重复使用的单级火箭运载器的主要性能和特点。
The defects of the existing space launch vehicle are pointed out, and the main performance and characteristics of the two reusable single stage rocket launch vehicles of the United States X-33 reduction experiment type and the “Adventure Star” practical type are emphatically introduced.