全国经济排名较为靠后，属于欠开发、欠发达地区。
The ranking of Guizhou province economy is far behind, leading to Guizhou province belongs to the less developed area.
通过对八面河油田井网密集区及井网稀疏的欠开发区的微构造研究，探讨了微构造表征技术。
Characterization technique of microstructure is discussed based on the microstructure study of the dense well spacing area and under-exploited area with wide-spaced Wells.
理论上，使苏丹合理地统一起来似乎是个很值得努力的目标：南部储油量丰富且欠开发，正好和有教育基础、商业有成且缺乏自然资源的北部互补。
On paper, a properly united Sudan seems well worth aiming for: an oil-rich but underdeveloped south complementing an educated, commercial north with few natural resources.
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