The previous research showed that oil and gas pools of upper Tertiary system have close relationship with distribution and activity of fault system.
初步的研究表明新近系油气成藏与断层系统的分布和活动关系密切。
We can speculate that the volcanic activity began with late Tertiary and the modern landform in Weizhou Island was formed by eruption of the Nanwan volcano in Pleistocene.
推测涠洲岛的火山活动始于晚第三纪，更新世南湾火山喷发形成涠洲岛的现代地貌。
The METI's tertiary sector activity index for 2q rose 2.6% QoQ, marking a sixth consecutive quarterly increase.
经济产业省公布第二季的第三产业活动指数较上季升2.6%，连升六季。
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