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crumb structure 團粒[屑粒狀]結構。

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Some soils , such as sandy soils , have a loose crumb structure with good drainage , whereas in clay soils the particles are small and stick together to give a dense crumb structure and poor drainage 一些土壤例如砂土具有松散的結構,因而有良好的排水性,而在粘土中,由于土壤顆粒小而互相粘合導致粘土結構緊密排水性較差。

Crumb structure the texture of a soil in terms of the size of the soil particles and how they interact , often determined simply by rubbing the soil with fingers 團塊狀構造:根據土壤顆粒的大小及顆粒之間的相互作用而決定的土壤的質地結構。