... biological time 生物学时刻 biological sedimentary rock 生物学沉积岩 biological rhythm 生物节律 ...
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biological l sedimentary rock 生物学沉积岩
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The sedimentary systems were divided 7 facies and 12 subfacies according to the characteristics in rock types, color, authigene and biological fossil.
根据岩石类型、颜色、自生矿物、生物化石等特征，进一步将上古生界沉积体系划分为7种沉积相和12种沉积亚相。
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