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单词
ore-lead age
释义
ore-lead age
ore-lead age
[
′ȯr ′led ‚āj
]
(geology)
An estimate of the age of the earth made by comparing the relative progress of the two radioactive decay schemes
235
U-
207
Pb and
238
U-
206
Pb.
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更新时间:2024/11/12 8:01:00