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- 水质 water quality
- 水质COD water COD
- 紫外扫描式水质COD测量技术与仪器研制 Ultraviolet scanning technique for water COD measurement and its instrument development
- 水质监测 water quality monitoring
- COD chemical oxygen demand (COD)
- COD值 COD
- 水质分析 analysis of water
- 高COD high COD
- 水质指标 water-quality index
- 低COD low COD
- 水质污染危及所有海洋生物。 Water pollution imperils all kinds of marine life.
- COD/P COD/P
- 因为水质不纯净，所以不能饮用。 Impurity of the water made it unfit to drink.
- CODα CODα
- 2001年度近岸海域水质类别 Grades of the Water Quality in Offshore Marine Areas in 2001
- COD特征值 characteristic value of COD
- 水质预测 water quality prediction
- 临界COD critical COD
- 灌排水质 irrigation and drainage water quality
- COD测定 COD determination
