The modem karst formation started in the old Tertiary Period, and matured in the Quatemary Period.
现代岩溶的形成开始于老第三纪，成熟于第四纪。
This 65.5-million-year-old layer of Earth separates fossils of the Cretaceous period from those of the Tertiary period.
这个有着6550万年历史的地层分离了白垩纪的化石和第三纪的化石。
As developing time continues, remnant resources become less and less and most ot old oil fields has entered into the tertiary oil recovery stage.
随着开采时间的延续，剩余资源量逐步减少，大多数老油气田已进入三次采油阶段。
After exploration over and over again, the eastern part of Linqing depression in Tertiary became an old area with low exploration degree.
临清坳陷东部第三系油气勘探几经反复，属低勘探程度的老区。
After exploration over and over again, the eastern part of Linqing depression in Tertiary became an old area with low exploration degree.
临清坳陷东部第三系油气勘探几经反复，属低勘探程度的老区。
应用推荐