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饮用水的供应问题是发展国民经济保证供水的主要问题之一。根据联合国1981～1900年十年世界饮水计划宣布的精神,要改善地球上十亿居民(据联合国资料)的饮水困境。在发展中国家将近80％的疫病与缺乏
The supply of potable water is one of the major issues in developing the national economy to guarantee water supply. According to the United Nations Declaration on Drinking Water in the Decade 1981-1900, the drowsiness of drinking water on the planet’s billions of inhabitants (according to United Nations sources) should be improved. Nearly 80% of epidemics and shortages in developing countries