基础释义
例句
英英词典释义

福克斯词典 \ 英汉词典 \

Archaean是什么意思？

Archaean

英[ɑ:ˈki(:)ən] 美[ɑrˈkiən]

adj. 太古代的；

例句

Archaean era granulite facies metamorphite series are extensively outcropped in Sa - heqiao, Hebei province. 冀东迁西洒河桥是太古代麻粒岩相变质岩系广泛出露的地区.
This type of graphite deposits were formend in the Late Archaean to Early Proterozoic. 该类矿床的成矿时代多集中在晚太古代末至早元古代初期,并且具有全球性.
The Archaean and Katarchaean units are preserved mainly as relic masses. 太古界与远太古界主要作为残余体保存下来.

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英英词典释义

Adjective
1. used of the earliest known rocks

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