And the boundary of them has the same lithologic character: the ravinement surface of river course or exposure mudstone of flooding plain and root clay.
二者的界面是相同的,
道砂体底部的冲刷侵蚀面或者是暴露过泛滥平
泥岩、根土岩等。
And the boundary of them has the same lithologic character: the ravinement surface of river course or exposure mudstone of flooding plain and root clay.
二者的界面是相同的,道砂体底部的冲刷侵蚀面或者是暴露过泛滥平泥岩、根土岩等。
声明：以上例句、词性分类
由互联
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