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