“SECORD”是“Secure Cord Switchboard”的缩写，意思是“

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“SECRA”是“Secondary Radar Data Only”的缩写，意思是“

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“SECSTATE”是“Secretary of State”的缩写，意思是“国务

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“SECTRANS”是“Secretary of Transportation”的缩写，意

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“SED”是“Signals External Data”的缩写，意思是

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“SEDAS”是“Spurious Emission Detection Acquisition

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“SEF”是“Sealift Enhancement Feature”的缩写，意思是“

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“SEHS”是“Special Events For Homeland Security”的缩

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“SEI”是“Specific Emitter Identification”的缩写，意

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“SEL”是“Senior Enlisted Leader”的缩写，意思是“高级

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