“USC”是“Universal Service Contract”的缩写，意思是“

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“USCENTAF”是“United States Central Command Air

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“USCIS”是“US Citizenship and Immigration Services”

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“USCS”是“United States Cryptologic System”的缩写，

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“USCYBERCOM”是“United States Cyber Command”的缩写，

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“USD(A&T)”是“Under Secretary of Defense For

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“USD(AT&L)”是“Under Secretary of Defense For

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“USD(C)”是“Under Secretary of Defense (Comptroller

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“USDELMC”是“United States Delegation to The NATO

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“USD(I)”是“Under Secretary of Defense For

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