Although we have got many research results, but there also have many problems need to be research, such as formative mechanism, operation policy and hubbing index.
目前，轴辐式网络的研究已经取得了许多研究成果，但在轴辐式网络形成机理、轴辐式网络运行和轴辐式网络评价等方面还需要进一步研究。
参考来源 - 轴辐式网络理论及应用研究The type structure and spatial differentiation of landscape is greatly influenced by the scale of the region, hence multi-scale analysis benefits to uncover the formative mechanism, evolutional rule and approaches for optimization.
土地利用景观的类型结构及其空间分异,受区域尺度大小的深刻影响,采用多尺度分析有利于深入揭示土地利用景观格局的形成机制、演化规律及优化途径。
参考来源 - 陕北农牧交错区土地利用景观动态与优化途径研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Each of them has its own formative mechanism and geochemical features.
它们的形成机理和地质地化特征不同。
The core of the research in this paper is the price formative mechanism of the toll road.
本文研究的核心问题是：收费公路的价格形成机理。
This paper introduces the formative mechanism and discusses the effective factors to the lime soil strength.
简要介绍了石灰土强度的形成机理；阐述了石灰土施工质量对石灰土强度的影响。
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