proterozoic
英
美
- n. 元古代
- adj. 元古代的
详细释义
Noun:
-
from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms
-
formed in the later of two divisions of the Precambrian era;
"proterozoic life forms"
双语例句
- 1. Wangjiawaizi gold deposit occurs 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.
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- 2. GLOBAL DISTRIBUTION OF THE PROTEROZOIC SPHAEROMORPH ACRITARCH Valeria lophostriata ( JANKAUSKAS )
- 元古代光球疑源类Valerialophostriata ( Jank. )的全球分布(英文 )
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- 3. The Proterozoic and Palaeozoic are two main metallogenic periods in the region.
- 西北地区以元古宙-古生代金属成矿为显著特色.
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- 4. Probably formed in Early Proterozoic, it was rejuvenated repeatedly in late stage.
- 其形成时间可能为早元古代, 后期又有多次复活.
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- 5. There are Middle | Lower Devonian Sanhuokou Group and Middle | Upper Proterozoic Bikou Group in the ore district.
- 矿区出露中下泥盆统三河口群和中上元古界碧口群.
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- 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。 - 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。
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