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.
简要介绍了这些技术的特点、各种方案对比和可以达到的效果。
Technical features, comparison of various options and their effects were briefly introduced.
当问题复杂，有许多的约束，那么识别一个好的设计方案对比于尝试去解释它更容易得多。
When a problem is complex, with lots of constrains, it is much easier to recognize a good solution than to explain it.
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