a western south China sea gas field
northwestern South China Sea
Northwestern of South China Sea
northwest continental margin of the South China Sea
northern South China Sea slope
Northern South China Sea resources
northern South China Sea
南海北部
南海北部海域
南海北部陆坡区
南海中北部
南海北部海区
northern slope of the South China Sea
northern part of the South China Sea
northern part of South China Sea
northern of the South China Sea
Northern of South China Sea
Northern margin of South China Sea
northern continental slope of South China Sea
northern continental shlef of South China Sea
northern continental shelf of South China Sea
Northern Area of South China Sea
Northeastern South China Sea
northeastern slope of the South China Sea