1. examination of water and wastewater 
   水质检验
2. benefit of urban water supply 
   城镇供水效益
3. charge of urban water supply 
   城镇供水水费
4. hygienic management of water supply and sewage 
   给水排水卫生
5. supply and demand analysis of water resources 
   水资源供需分析

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• 1. 城市给水检验
  {n.}安全母线 examination of municipality water supply...城市给水检验 examination of water supply hygiene...给水卫生审查 exceedingly rich to water supply
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