池塘水质改良  Ponds water quality improvement

长江水质改善  Water quality improvement of Yangtze River

城市湖泊水质改善  Improvement of Water Quality in Urban Lakes

改善水质  water quality improvement

水源水质改善  source water quality improvement

水质改善  Water Quality lmprovement; water improve; improvement of water quality; water quality improvement; Improvement of drinking water quality; water-quality improvement; water purification

水质改善对策  water quality improvement countermeasure

持续性品质改善  continious quality improvement; continuous quality improvement

持续性医疗品质改善计划  continuous quality improvement

改善水环境  water environment bettering

改善水流  improving flow direction

改善水驱  improving water flood

改水改厕  drinking water and toilet; Improving lavatories and drinking water; Improving drinking water and lavatories; Safe treatment of night-soil and water supply; Reconstructing water supply and lavatory

画质改善  image improve

品质改善  quality circle; quality control; Quality improvement; Improvement; QI Quality Improvement

品质改善活动  QAN Quality Amelionrate Notice

品质改善小组  QIT Quality Improvement Team

膳食品质改善效果  dietary-quality-improvement effect

水质改良  water quality improvement; water purification; water-quality improvement; amelioration of water quality

水质改性  water quality adjustment; water quality modifying; water quality modification