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Aviation
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unified system
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propulsion laboratories
unified system
推进实验室一元化系统
unified communication, navigation and identification system
通信导航识别综合系统
unified development specification system
统一研制规范系统
unified flight analysis system
联合飞行分析系统
unified microwave system
微波统一系统
unified S-band system
S 波段统一系统
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