黄河三角洲海岸带
Yellow River Delta coastal zone
构造冲积扇-三角洲复合体
tectonic fan-delta complex
韩江干流及其三角洲岸线
the mainstream and delta of Han River
黄河三角洲岸线
Huanghe River delta coastline
同期三角洲-海底扇对
contemporaneous delta-submarine fan couples
复二复三角柱
ditrigonal prism of the second order