Research purposes: in the new railway designing, choosing the rail joint scheme is one of the important problems at decision phase.
研究目的：新线设计中，接轨方案的选择是决策阶段需要解决的重要问题之一。
Abstract: economic evaluation includes national economic evaluation and fiscal evaluation, is the important work in various large medium sized project feasibility investigation and decision phase.
摘要经济评价包括国民经济评价与财务评价，是大中型建设项目在可行性研究决策阶段的重要工作。
Abstract: economic evaluation includes national economic evaluation and fiscal evaluation, is the important work in various large medium sized project feasibility investigation and decision phase.
摘要经济评价包括国民经济评价与财务评价，是大中型建设项目在可行性研究决策阶段的重要工作。
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