When it comes to mathmatics, you do not need to stick to well-known Golden Ratio or Fibonacci sequence.
当谈到数学时,你无需遵循众所周知的黄金分割比率和斐波那契序列。
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At other hand, the golden content of the sandstone is higher than that of fine grain siltstone and mudstone, and tends to decrease and stabilize upward in the turbidite sequence.