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前寒武纪
释义
前寒武纪
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理学
前寒武纪
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precambrian
前寒武纪
地球形成之后,到寒武纪之前的地质时期。为一非正式地质年代术语,又称先寒武纪。
Physics
precambrian
前寒武纪[的]
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natural period of soil site
natural person
natural perspective
natural phenological observation
natural philosophy
natural pigment
natural placer minerals database
natural planting
natural pollution source of water body
natural polymer
natural polymer flocculant
natural positive cone
natural potential
natural potential analysis
natural potentiometer
natural product
Natural Product Research and Development
natural projection
natural protection map
natural protection planning
natural purification
natural purification technology
natural quartz
natural radiation belt
natural radiation level
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