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卫星导航信号
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satellite navigation frequency
卫星导航频率
卫星导航系统播发导航信号时占用的频率资源。通常包括频点数量、各频点的中心频率和带宽等要素。
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history of Chinese philosophy
History of Chinese Phonology
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history of Chinese political thought
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history of city water conservancy in the world
history of civilization
history of coal chemical processing
history of Commonwealth of Dominica
history of Commonwealth of the Northern Mariana Islands
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