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@phuongthoa
A superconductor is a material that achieves superconductivity, which is a state of matter that has no electrical resistance and does not allow magnetic fields to penetrate. An electric current in a superconductor can persist indefinitely. Superconductivity can only typically be achieved at very cold temperatures.
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@gautruc
😅 Xin chào, buổi chiều đẹp trời! Chếc gồi!
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