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proterozoic stratum 元古代层
Early Proterozoic 早元古代
mid-Proterozoic ice age 中原生代冰期
Middle-Upper Proterozoic 中上元古界
Upper Proterozoic 上元古界
early-middle proterozoic 早中元古代
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元古代 - 引用次数：24 参考来源 - 湘东北地区显生宙花岗岩岩浆作用及其演化规律元古宇 - 引用次数：1 参考来源 - 藏东同卡石榴辉石岩和拉萨地体松多蓝片岩 Tongka garnet pyroxenite in eastern Tibet and Songduo blue schist in Lhasa block原生代元古宙
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元古代
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proterozoic [ ,prɔtərə'zəuik; ,prəu- ]
- n. from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms
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adj.
formed in the later of two divisions of the Precambrian era
"proterozoic life forms"
以上来源于: WordNet
柯林斯英汉双解大词典
Proterozoic /ˌprəʊtərəʊˈzəʊɪk/
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1.
N the later of two divisions of the Precambrian era, during which the earliest plants and animals are assumed to have lived 原生代 → compare Archaeozoic
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2.
ADJ of or formed in the late Precambrian era 原生代的
双语例句
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The rock masses of HengLingguan, Beiyu, Yongji, Yiemiaotan, Taiyu and Yianzhuan are early proterozoic granide rock masses which are located in the paleo rift of Zhongtiao Mountain.
本文介绍的横岭关、北峪、永济、野庙滩、太峪和烟庄岩体是中条山古裂谷中的早元古代花岗岩类岩体。
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The ore bed hosts in boracic granulite of Lieryu formation, Liaohe group of lower proterozoic.
矿层赋存于早元古界辽河群里尔峪组含硼变粒岩段。
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At present, the age of storm deposits reported in China may be traced back to late proterozoic.
目前我国已报导的风暴沉积时代可追溯到晚元古代。
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