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单词
cerium-142
释义
cerium-142
cerium-142
[
′sir·ē·əm ‚wən‚fȯrd·ē′tü
]
(nuclear physics)
A radioactive isotope of cerium with atomic mass number of 142; emits α-particles and has a half-life of 5 × 10
15
years.
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更新时间:2026/2/26 22:26:39