常見(jiàn)例句The north is the alluvial plain of Huanghe, the Quaternary deposition is diluvian sand and soil . 中部為山前傾斜平原區(qū)，第四系厚度從南向北變厚，第四系為沖洪積形成的粘性土，下部基巖為奧陶系灰?guī)r和第三系巖漿巖；Diluvi 迪盧維 返回 diluvian