短語詞組短語distributary channel of delta 三角洲分流河道subsea distributary channel 水下分流河道subaqueous distributary channel sand 水下分流河道砂體distributary channel sand body 分流河道砂體underwater distributary channel 水下分流河道subaqueous distributary channel 水下分流河道subsea distributary channel deposit 水下分流河道沉積front subaqueous distributary channel 前緣水下分流河道distributary channel systems 分流水道 返回 distributary channel