并对设计原则，方案对比分析和施工特点进行了阐述。
Meanwhile, the principles for design, contrast analysis of the plans and the construction characteristics were also presented.
简要地对比分析了相邻桩之间不同视搭接宽度的两种方案。
Two different plans of apparent connection length between near pile are briefly contrasted and analyzed.
最后，通过对几种布孔方案进行对比分析，找出了射孔套管的优选布孔方案。
Optimized scheme for holding perforation is identified by comparing different schemes for holding perforation.
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