Countdown clocks marking the days until the opening ceremony sprinkle the city and the entire , sprawling metropolis has been turned upside down , with scaffolding covering most of the historical sites , roads being repaved , new highways being built , and construction under way at the actual olympics venues 倒计时钟一刻不停地数着距离奥运会开幕还有多少天，诺大的一个北京城都被搅动了起来：多数古迹都“裹着”脚手架进行维护，旧路在修、新路在建，奥林匹克运动场馆的建设更是热火朝天。
Urban design appeared in the ancientry . it has been already invoved in beijing ' s construction after 1949 , although the concept of urban design was not clearly put forward . it has great history and modern sense to study the urban design history of beijing , especially the history of this period . but with a great pity , this kind of research is very lack today while we are emphasizing the importance of urban design of beijing construction “城市设计，古已有之” 。建国以后北京城的建设虽然没有明确提出城市设计的概念，实际上却包含着城市设计的工作。研究北京的城市设计历史尤其是建国以来的历史具有重要的历史意义与现实意义，但是今天在强调城市设计对建设北京城的重要作用的同时，却十分缺乏对建国以后北京城市设计历史的研究。
Many organic and inorganic contaminants of the shallow groundwater in city zone and close suburb of beijing were investigated on the spot , more than 100 samples were got . by spatial analysis , modeling calculation and spatial interpolation , maps of each contaminant distributions are made and divided into two parts , the beyond the standard and below the standard . with those maps , the total environmental quality of the groundwater is evaluated 利用本系统提供的空间分析、模型运算等分析工具，对2000 2001年北京城近郊区浅层地下水环境污染进行了如下评价分析工作： ( 1 )对地下水调查中检测出的各种有机污染物和无机污染物进行了空间插值分析，划定了超标区的分布范围； ( 2 )对2000年枯水期的浅层地下水综合环境质量进行了分析和评价； ( 3 )对1996 、 1999和2000年的综合水质评价图进行了对比分析，发现北京城近郊区浅层地下水环境综合质量逐年下降；预知未来几年内，浅层地下水环境质量不会有明显好转。
Beijing city net power equipment co . , ltd . , a comprehensive power supplemental enterprise , is a whole system of the power equipment production , installation and sales , with the power equipment manufacturer , the power equipment installation company , and the power equipment sales company etc . as its branch organizations 北京城网电力设备有限公司是集电力设备生产、安装销售为一体的综合性电力配套企业，设有电力设备生产厂，电力设备安装公司，电力设备销售公司等机构。
