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passive-active detection and location
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el.
被动-主动探测和定位
mil., air.def.
无源-有源探测定位
space
被动-主动
声呐
探测与定位
tech.
无源有源探测定位
passive/active detection and location
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avia.
无源/有源探测与定位
earth.sc.
无源-有源探测定位系统
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