相关词条
+antecedent river
1 . 先成河
空间分布关系,划分出:顺向河(consequent river),逆向河(obsequent river),先成河(antecedent river),后成河(subsequent river)和叠置河(superimposed river)五种.
+antecedent drainage
1 . 先成水系
Antarctic Circle 南极圈antecedent drainage 先成水系anthracite 无烟煤
+antecedent debt
1 . 先前的债项
annuity on human life 人寿年金antecedent debt 先前的债项ante-dated cheque 倒填日期支票
+antecedent valley
1 . 先成谷
antecedent river 先成河antecedent valley 先成谷anteclise 台背斜
