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imported>Primus-OSISCV
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==自制汉字==
{{自制气体|雷}}是一种放射性元素, 符号为Rn, 原子序数为86, {{自制气体|雷}}-222的半衰期为3.82天, {{自制气体|雷}}-222的衰变产物是钋-218