According to water supply theory and characteristics of industry enterprise water networks, analysis management software on Liao Hua water supply networks was developed.

作者以给水工程理论为基础，针对工业企业供水管网的特殊性，研制了辽化供水管网软件管理分析程序。

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The order of the pollution for serious level to light level in the seven key river systems in 2001 is: Hai river, Liao river, Huai river, Huang river, Song Hua river, Yangtze river and Pearl river.

2001年度七大水系污染由重到轻的顺序依次是：海河、辽河、淮河、黄河、松花江、长江和珠江。

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