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フェムト(10 秒とは・・・ - Tokushima Uフェムト(10-15)秒とは・・・ 1s 秒 10-3 ミリ-6 マイクロ 10-9 ナノ 10-12 ピコ-15 フェムト 時間 スパコン1命令
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