silty gravel 中文意思是什麼
silty gravel
解釋
粉質土礫-
The intercalations are divided into five types, such as muddy intercalation, silty intercalation, calcareous intercalation, marly intercalation, and gravel intercalation
夾層類型主要有泥巖夾層、粉砂質泥巖夾層、灰質夾層、泥灰質夾層和礫石質夾層5種。
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