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radioactive metal
释义
radioactive metal
radioactive metal
[
¦rād·ē·ō′ak·tiv ′med·əl
]
(nuclear physics)
A luminous metallic element, such as actinium, radium, or uranium, that spontaneously and continuously emits radiation capable in some degree of penetrating matter impervious to ordinary light.
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更新时间:2026/6/18 16:24:37