Gulf北部湾(在中国和越南之间)
Beibu Wan Basin was a lake in the middle Eocence - Lower Oligocene.
北部湾 盆地在中始新世至早渐新世是一个湖泊.
Pan - Beibu Bay economic area has developed rapidly.
泛北部湾经济区发展迅速.
R 1 core is located in the northeastern part of the Beibu Gulf.
本文综述北部湾东北部R_1孔岩心记录.