proterozoic是什么意思

2024-02-02 15:48:16

proterozoic

美英

n. 元古代

adj. 元古代的

Noun

from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms

Adjective

formed in the later of two divisions of the Precambrian era;
"proterozoic life forms"

用作名词(n.)

Early Proterozoic high-pressure metamorphism in the Wutaishan.五台山早元古代高压变质作用研究。
Wangjiawaizi gold deposit occurrs in Lower Proterozoic opimetamorphic rock series.王家崴子金矿床赋存于辽南古元古代浅变质岩系中。

用作形容词(adj.)

Boron deposits of eastern Liaoning occur in a suite of Early Proterozoic metamorphic rocks, with boron orebodies existent in magnesian marble.辽东硼矿床产于早元古代的一套变质岩内，硼矿体赋存于镁质大理岩中。