claypan
n.
粘土层，粘土湖；
英英释义
Claypan
In geology, a claypan is a dense, compact, slowly permeable layer in the subsoil having a much higher clay content than the overlying material, from which it is separated by a sharply defined boundary. Claypans are usually hard when dry, and plastic and sticky when wet.
以上来源于:Wikipedia
权威例句
Clay panclaypan:
Clay pan
Soil electrical conductivity as a crop productivity measure for claypan soils.
Phosphorus loss and runoff characteristics in three adjacent agricultural watersheds with claypan soils.
Delineating productivity zones on claypan soil fields using apparent soil electrical conductivity
Saturated hydraulic conductivity and its impact on simulated runoff for claypan soils.
Herbicide Contamination of Groundwater Beneath Claypan Soils in North-Central Missouri
Nitrogen losses in runoff from three adjacent agricultural watersheds with claypan soils
Corn Response to Conventional and Slow-Release Nitrogen Fertilizers across a Claypan Landscape
1. 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。
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2. 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。
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3. 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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4. Through the complete analyzing of representative pedons, there are 5 diagnostic horizons, such as Ochric epipedons, Argic horizon, Claypan, Hydragric epipedon, Hydragric horizon;
通过对各土系的典型单个土体的全面的理化分析，确定样区土壤发育有淡薄表层、黏化层、黏磐层、水耕表层和水耕氧化还原层5个诊断层；
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5. Through the complete analyzing of representative pedons, there are 5 diagnostic horizons, such as Ochric epipedons, Argic horizon, Claypan, Hydragric epipedon, Hydragric horizon;
通过对各土系的典型单个土体的全面的理化分析，确定样区土壤发育有淡薄表层、黏化层、黏磐层、水耕表层和水耕氧化还原层5个诊断层；
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claypan
