In the current situation, studies the layout of urban rail transit network planning theory and methods have important theoretical and practical value.
在当前形势下，研究城市轨道交通线网布局规划理论和方法具有重要理论意义和实践价值。
Taking Shixing County as an example, the goal, the principle, the methods, and the layout of the urban green system planning are studied by using the theory of landscape ecology.
以广东省始兴县城区为例，运用景观生态学原理，探讨了城镇绿地系统规划的目标、原则、方法及布局结构等问题。
Theory of constraints, linear planning and analysis of hierarchical program provide the principles and methods of determining priority.
约束理论、线性规划理论和层次分析法均从不同角度给出了确定优先权的原理和方法。
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