奥陶系的 meaning in English

ordovician

It is very important for the exploration and development of oil - gas to study and clarify origin and occurrence of these favorable reservoirs
研究和搞清这些有效储层的成因及分布规律，对塔河油区奥陶系的油气勘探开发至关重要。
The development of fault connecting to origin rock is basic condition of cambrian - ordovicion reservoir formation . the trap of jurassic is restricted by the origin rocks depression bound
通源断裂发育是来源于寒武-奥陶系的油气成藏的基本条件，而侏罗系油藏则受生烃凹陷范围限制。