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寒武系
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寒武系
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寒武系
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Cambrian System
寒武系
全球标准年代地层的系级单位,显生宇和古生界的第一个系,是距今5.41亿~4.85亿年前地史时期地球上形成的全部地层,地层位置在埃迪卡拉系之上,奥陶系之下。
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Boolean space
Boolean sum
Boolean summation formula
Boolean term
Boolean valued model
Boolean-valued model
Boolean-valued set theory
Boolean variable
Boole crater
boom
Boomerang Nebula
Boomerang telescope
boominess
boom-mounted microphone
boom operator
boom sprayer
boom-supported working platforms
Boone
Boone Library
Boone Library School
Boone Library School Quarterly
Boon Rye Gi
boor's mustard herb
Boosaaso
boost
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