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ITRS or ItRS may refer to: * International Terrestrial Reference System, for creating earth measurement reference frames * International Technology Roadmap for Semiconductors, an international body for guiding the semiconductor industry * Integrated television ratings system, a system of audience measurement for television 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「ITRS」の詳細全文を読む スポンサード リンク
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