punch card
短语穿孔卡片
词形变化
punch cards
复数
punch cards
别名
punchcard
释义与例句
n.
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1.
A card that can have holes or notches cut in it, especially one for storing data, that can be sorted according to combinations of holes present or absent.
打孔卡
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2.
A card that can have holes or notches cut in it, especially one for storing data, that can be sorted according to combinations of holes present or absent.
Such a card, the size of a US dollar bill and having 80 columns of 12 rows, used in early mainframe computers.
历史 计算机 工程 数学 -
3.
A card given to a customer and punched with a hole at each purchase, allowing a reward to be claimed when fully punched.