这个词是什么意思？
Any of several processes in which undesirable impurities in water are removed or neutralized; for example, chlorination, filtration, primary treatment, ion exchange, and distillation. It includes treatment of WASTEWATER to provide potable and hygienic water in a controlled or closed environment as well as provision of public drinking water supplies.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D018508 · MeSH 2026。
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