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图 1 2013－2017年我国村镇集中供水率及人均日生活用水量变化
Figure 1. Changes of rural centralized water supply rate and daily domestic water consumption per capita in China from 2013 to 2017
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图 2 村镇污水处理设施荒废场景
Figure 2. Abandoned facilities of rural sewage treatment
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2 ,Table
3 个