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砂巖復合體發(fā)育于退覆沉積層的旋回層內(nèi).The complex of sand bodies developed in a cyclical sequence of off - lapping sedimentary beds.米級旋回層序之頂覆以厚度不等的?These cyclic sequences are overlain by the lagoon dolomitic mudstones and shales....

“旋回層”的英語可以翻譯為：cyclothem ...