海底天然气 meaning in English

submarine gas

Geophysical prospecting high technologies of marine gas hydrates
海底天然气水合物成因影响因素探讨
Some advances in marine gas hydrates from the blake ridge and the hydrate ridge
海底天然气水合物的地震资料处理与分析
Japan and china are also feuding over the rights to undersea gas deposits in the east china sea
日本和中国还因为东中国海海底天然气开采权而陷入争端。