biological sedimentary rock

常见例句

双语例句

• 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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