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radio navigation technique
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radio navigation technique
Encyclopedia
工学
无线电导航
释
radio navigation technique
无线电导航技术
通过测定无线电信号的振幅、频率和相位等参数及其变化,提供位置、速度、时间及方向等信息的导航定位技术。广泛用于飞机、船舶和车辆等运载体的导航定位。
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constitutional relation
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Constitution of Cuba(1901)
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Constitution of Fiji 1970
Constitution of Fiji 1990
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