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寒武纪大爆发
释义
寒武纪大爆发
Encyclopedia
理学
古生物学
释
Cambrian explosion
寒武纪大爆发
地球生命系统起源与演化早期发生的一次多样性爆发式增加事件。具体是指距今5.4亿~5.0亿年间,地球海洋生命系统中“突然”出现了门类众多的后生动物(包括无脊椎动物和脊椎动物)。
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degree of degeneracy
degree of direct reduction
degree of dispersion
degree of dissociation
degree of entanglement
degree of excitation
degree of exploration
degree of field extension
degree of final dependence
degree of financial leverage
degree of finite morphism
degree of fluctuation
degree of forbiddenness
degree of freedom
degree-of-freedom criteria
degree of freedom of multielement and multi phase system
degree of freedom of multielement and multi-phase system
degree of hollowness
degree of homogeneity
degree of hydrolysis
degree of impairment
degree of injury
degree of inseparability
degree of insolvability
degree of interlacing
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