基本解釋[地球科學]多邊形土壤詞組短語短語polygonal fissure soil 多角形裂縫土polygonal soil crack 多角龜裂polygonal -structured soil 多角形結構土polygonal fi ure soil 多角形裂縫土stone polygonal soil structure 礫質多角型構造土polygonal soil更多詞組專業(yè)釋義地球科學多邊形土壤