Appraisement methods, which means giving the appraisal of railway construction organization variant, is an important component part of design document at the preliminary design stage.
铁路施工组织方案比选，是铁路初步设计阶段设计文件的重要组成部分。
It is an important stage between the preceding and the following or railway yard design during the process of construction and reconstruction of railway basic facilities.
铁路站场设计在铁路基础设施建设及改造设计过程中是一个承前启后的重要环节。
Combined with the practices of the railway constructions, the author points out the importance of strengthening the earlier-stage works of the railway surveying and design.
作者对加强铁路勘测设计的前期工作，结合铁路建设的实际，提出了其重要性，并提出了加强前期工作的一些具体做法和意见。
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