机构:

“IST”是“Interswitch Trunk”的缩写，意思是“开关间中继

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“ISU”是“Internal Airlift or Helicopter Slingable

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“ITA”是“International Telegraphic Alphabet”的缩写，

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“ITAC”是“Intelligence and Threat Analysis Center (

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“ITALD”是“Improved Tactical Air-Launched Decoy”的

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“ITAR”是“International Traffic In Arms Regulation

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“ITF”是“Intelligence Task Force (DIA)”的缩写，意思

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“ITG”是“Infrared Target Graphic”的缩写，意思是“红外

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“ITL”是“Intelligence Task List”的缩写，意思是“情报

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“ITRO”是“Inter-Service Training Organization”的缩

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