soft mudstone
... 软化点沥青softening point asphalt 软泥岩soft mudstone 软件包软体 package ...
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强造浆软泥岩 high mud making soft shale ; hellogh mud making soft shale
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研究目的：红层软泥岩是一种特殊岩土，具有易崩解、易风化、遇水易软化等特点。
Research purpose: Red rock is a special terrane and it is easy to disintegrate, weather and be softened after absorbing water.
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