Jinan is a single core 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。
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。
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.
同时本文还做了单段铁心与半轴向长（ 2 5段铁心）的温升对比计算。
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