Radar tracking of the shuttle, like the final accurate ground-based navigation, had not yet begun.
对航天飞机的雷达追踪,如最后精确的陆基导航,还没有开始。
Obviously, the traditional radar has already been difficult to meet the demand for contemporary navigation.
显然,传统的雷达已难以适应当代航海的需求。
Wave measurement by X-band Marine navigation radar is very important to ocean monitoring.
波段导航雷达测波技术的研究,对于海洋监测具有重要意义。
Wave measurement by X-band Marine navigation radar is very important to ocean monitoring.
波段导航雷达测波技术的研究,对于海洋监测具有重要意义。
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