李三系最初源于对称空间及全测地子流形的研究。

Lie triple systems were introduced in connection with the symmetric space and the totally geodesic submanifold.

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在生物组合、成岩性及构造样式等方面与早白垩世李三沟组明显不同。

Furthermore, the distinctive differences are present between this suite of strata and the Early Cretaceous Lisangou Formation in terms of biological assembly, diagenesis and tectonic pattern.

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