フェイクカシオだ
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シチズン版のカシオ関数電卓なんてあるの
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防爆関数電卓、パワがあってステキな外観だ
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結論: デッドコピーの偽物
What is better, the Citizen FX calculator or the Casio FX? - Quora https://www.quora.com/What-is-better-the-Citizen-FX-calculator-or-the-Casio-FX