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How big is the hole in a CD 2024?
直径
有多大 厚度
Questioner:Benjamin Wilson 2023-05-07 10:31:35
The most authoritative answer in 2024
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Harper Lee——Studied at the University of Queensland, Lives in Brisbane, Australia.
A CD is
4.72 inches (
120 millimeters) in diameter and .047 inches (1.2 millimeters) thick. The positioning hole in the middle is .59 of an inch (
15 millimeters) in diameter. A CD usually weighs around .53 of an ounce (15 grams). A standard CD can store up to 74 minutes of data.
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