The extremely pure ester oil or extremely narrow distillation range of base oil, synthetic hydrocarbon oil to the same height as flash point, using more safe.
采用极其纯净的酯类油或馏程极窄的合成烃为基础油，赋予成品油等高的闪点，使用更安全。
The huge thick mudstone section deposited at the turning position from uprising to subsiding of the base level is the main hydrocarbon source rock and favourable reginal cap rock.
基准面上升到下降的转换位置发育的大套泥岩段是区内的主要烃源层和良好的区域盖层。
There is a big potential of exploration in deep formation of mature oil province. Theory of hydrocarbon generation in deep source rock is the base of finding deep reservoirs.
老油区深层具有很大的勘探潜力，深层烃源岩油气生成理论是寻找深层油气藏的基础。
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