Warning: file_put_contents(/www/wwwroot/ppbbu/www.30232.com/cache/0ac18f4260c347eda6d71a9a5d5a4106.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/www.30232.com/index.php on line 55 imperviable例句_imperviable英汉例句_imperviable双解例句_绍翊字体网有道词典
Urban roof is one of the components of urban imperviable areas and the roof runoff is an important source of urban nonpoint source pollution. 摘要城市屋面是城市不透水面积的一个重要组成部分，屋面径流是城市非点源污染的一个重要来源。