数字と電卓画面

数字と電卓画面

計算機の液晶画面上に1から10の数字

alegri / 2009-12-28
1600x1064


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Tags

液晶桁電卓 数字 デジタル 科学 ペン 数学 ビジネス 金融 科学 数学計算
ID: 1070 / H: 1600 x W:1064 / DL: 287 / V: 11547