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介绍了Ｉｎｔｅｒｎｅｔ的由来和发展，以及由此引出Ｉｎｔｒａｎｅｔ概念，并叙述了Ｉｎｔｒａｎｅｔ技术在航天领域应用的必要性及发展前景。
Introduced the origin and development of Internet, and the concept of Intranet, introduced the necessity and prospect of Intranet technology applied in aerospace field.