改水 meaning in English

improve water quality
recreational water

Criteria for evaluation of effect of water supply improvement and defluoridation measures
改水降氟措施效果评价标准
An observation of endemic goiter control by water improvement to reduce iodine
改水降碘防治地方性高碘甲状腺肿效果观察
Effects of food fluorine on human health in fulfilled water - improving fluorosis area
饮水型氟中毒病区改水后食物氟对人群健康影响的研究
Peport on the reserch of primary school pupils ' knowledge , belief and acti on about hygienic behaviour
改水项目地区小学生洗手与饮水行为研究
Influence of standardized deep well water on morbidity and mortality of esophageal cancer in linzhou
改水对林州市食管癌发病率和死亡率的影响

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