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paleobotany
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paleobotany
Encyclopedia
理学
古植物学
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paleobotany
古植物学
通过研究地质时期的植物化石,以追溯和重建植物界过去历史为宗旨的学科。主要研究植物化石的形态解剖、系统分类、生存条件和各门类植物的起源、发展、演化以及它们在地质时期的时空分布和生态环境等。
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conditional multiplicity function
conditional mutant
conditional mutation
conditional mutual information
conditional non-prosecution
conditional numbers
conditional optimal control
conditional potential
conditional potential; formal potential
Conditional power
conditional probability
conditional probability density
conditional probability distribution
conditional probability measure
conditional problem of variation
conditional proof
conditional proposition
conditional random field,CRF
conditional restraint function
conditional risk
conditional self-information
conditional sentence
conditional solubility product
conditional stability
conditional stability constant
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