claypan

基本解释

The element geochemistry behavior of Guanghan claypan indicated that it has the dry change tendency in the environment.
广汉亚粘土层的元素地球化学行为表明它是在变干趋势的环境中形成的。
Through the study about lanthanon and trace element, we can obtain the Guanghan claypan formation that has the homologous ingredient characteristic.
通过对微量元素和稀土元素的研究，可以得出广汉粘土层的形成具有同源成分特征。
The original emphasizesd on construction in mine shaft deep thick swelling claypan in Tang-kou, the damage of outward layer a well of wall and some efficient measures.
介绍了唐口副井井筒冻结段深厚膨胀黏土层施工、外层井壁变形破坏情况及采取的有效措施，取得了一些有用的经验。为类似地层施工提供借鉴。
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a layer of stiff impervious clay situated just below the surface of the ground, which holds water after heavy rain