经过对大量数据的分析整理，研究西安市范围内几类不同使用功能、结构形式建设项目的工期与成本控制指标值。

Via a lot of work on the large datum, this paper studies schedule and cost's control index values of engineering project by way of different functions and structure types in Xi 'an.

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对西安市区域内雨水下渗和贮存、实现雨水资源化及其利用等方面做了探索，并根据实际情况对西安市雨水资源化的必要性、可能性及可持续性进行了分析。

The writer probes into permeation and storage of rainwater, and its further utilization as a resource, and also analyses the necessity, possibility and sustainability of it in Xian city.

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