Jinan is a singlecore city with highly concentrated economy, with powerful core region economy, and relatively weaker hinterland economy. It is an obvious dualistic structure.
济南市是经济高度集中的单核心城市，核心区经济实力强大，而腹地则相对实力较差，城乡二元结构明显。
2
Use of single well core data and production test results on the model test, the authentic interpretation model established for the region.
利用单井岩心数据和试油成果对建立的模型进行检验，所建立的解释模型真实可靠，适用于本地区。
3
At the same time, temperature rise calculations in single-segment iron core and in half-of -axial-length region(25 segments) were done and compared.