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- America and Germany do well in inland river navigation. 美国和德国是内河航运强国。
- This method is used to calculate the minimum working altitude of AN-APN-220C Doppler navigation radar. 推导出最小起量高度的简捷而实用的计算方法;用此方法计算了AN-APN220C多普勒雷达的最小起量高度.
- This paper analyses in detail the signal relation of Doppler navigation radar altitude system which adopts automatic cycle calibration technique during self calibration. 本文详细分析了采用周期自动校准技术的多普勒导航雷达测高装置自校时的信号关系。
- By tombigbee Gulf River navigable. 由汤比格比河通航墨西哥湾。
- A virtual instrument based integrated measurement system for Doppler navigation radar is developed. Using direct digital synthesis(DDS)technique,a kind of radar Doppler frequency simulator is introduced. 分析了机载四波束多普勒测速雷达的工作原理,采用直接数字频率合成(DDS)技术进行多普勒频移模拟器的设计,通过数字控制,该模拟器可以产生高分辨率的多普勒频率信号；
- As an advanced specialized transportation mode, the containerized traffic in Yangtze River has developed for nearly 20years, and become a bright point in Yangtze River navigation. 长江集装箱运输作为一种先进的专业化运输方式，近二十年来发展迅猛，已成为长江航运的一个亮点。
- Inland river navigation is an important component of comprehensive transportation system.It has no commutable advantages and actions in transporting bulk cargo. 内河航运是我国综合运输体系中的重要组成部分，在大宗货物运输中具有不可替代的优势和作用。
- Radio Navigation Radar and Remote Control Aid 无线电导航雷达及遥控设备
- Navigation is difficult on this river because of the hidden rocks. 因为河上有暗礁，所以在这条河上航行很困难。
- Aeronautical Radio Navigation Radar 航空无线电导航雷达
- Target Identification Navigation Radar 目标识别导航雷达
- Arkansas River Navigation System 阿肯色河航行系统
- The Columbia River Navigation Channel 最近宣布,哥伦比亚河道
- management of boundary river navigation 界河航行管理
- Target Tracking Realization of an Embedded Navigation Radar System 嵌入式船载导航雷达系统目标跟踪的实现
- inland river navigation standard 内河通航标准
- Man-made channels make the river navigable for 180 miles upstream of San Francisco Bay; ocean-going ships travel as far inland as the City of Sacramento. 人工运河使该河溯流至旧金山海湾的180英里都适于航行;入海船航行在萨克拉曼多如同置身于远方内陆。
- Integrated Measurement System Design of Doppler Navigation Radar System 机载多普勒导航雷达综合检测系统设计
- The river had worn a ravine between the hills. 那条河在两山之间已造成一个深谷。
- Can we dredge the river to make it deeper? 我们能不能把这条河疏浚得深一点？
