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长期以来,美国航宇局在研制宇宙飞行器的过程中一直应用了计算机辅助设计技术。现在这种技术已被广泛地应用在非空间工业上。航宇局编制了许多适用予一般用途的计算机程序,其中用途最广、最负盛名的要数
For a long time, NASA has been using CAD technology in the development of its spacecraft. Now this technology has been widely used in non-space industry. NASA has developed a number of computer programs suitable for general use, of which the most versatile and most prestigious