The island is huge fissure eruption of adjacentformation volcanic island.
各岛是从洋底巨大裂隙喷发形成的火山岛。
2
Coal formed gas is a import energy which is a kind of unconventional gas of stored in coal bed and adjacentformation, its principal ingredient is methane.
煤层气是一种重要能源，它是一种储存于煤层及临近岩层之中的非常规天然气，其主要成分是甲烷。
3
The adjacent mountain systems are the water source areas of all the streams, shallow groundwater, springs, and lakes because runoff formation does not occur in the desert basin and plain systems.