The United States Navy is investigating the use of fiber optics for communicating with submerged submarines.
美国海军正在研究如何利用纤维光学同没入水下的舰艇进行通讯。
The United States is the world's largest consumer of glass fiber.
目前美国是世界最大的玻璃纤维消费国。
The main purpose of this paper is to give a united treatment of the structure of differential geometry of various fiber bundles.
本文给出各种纤维丛微分几何结构的一个统一处理,首先引进了一个新定义;
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