随着社会主义市场经济的快速发展,城市建设每天都在发生变化,城市人口也呈急速增长趋势,给市政建设带来了巨大压力,尤其以污水管道的施工最为突出。%With the rapid development of the socialist market economy, city construction changes from day to day. City po- pulation also showed a rapid growth trend, which has brought huge pressure on municipal construction; the most prominent pressure is that on the construction of the sewage pipe.
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