「主命名空间沙盒」：修訂間差異
imported>SCR 1845-63 無編輯摘要 |
imported>Primus-OSISCV 無編輯摘要 |
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Please note: Please conduct your test below this line of text. Please do not delete or change this line of text or the part above this line of text. | Please note: Please conduct your test below this line of text. Please do not delete or change this line of text or the part above this line of text. | ||
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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 | |||