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单词
K-T boundary
释义
K-T boundary
网络
第三纪界限;界线;边界
网络释义
1.
第三纪界限
... Galeotti)教授说:“基于学界对于白垩纪与
第三纪界限
(
K-T boundary
)的研究,当时发生的生物大规模灭绝与地层中铱元素(Ir) …
zhidao.baidu.com
2.
界线
K-T
界线
(
K-T boundary
),K代表德文的Kreide,是白垩的意思。是介于白垩纪和第三纪之间的界线,富含铱的黏土层,大约 …
baike.baidu.com
3.
边界
这层岩石被地质学家称为K-T
边界
(
K-T boundary
),意思是白垩纪-第三纪界限的标记 线。下层岩石中含有丰富的恐龙化石, …
www.docin.com
例句
释义:
第三纪界限,界线,边界
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更新时间:2024/12/25 14:19:59