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- 水质water quality
- 水质CODwater 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
- CODchemical oxygen demand (COD)
- COD值COD
- 水质分析analysis of water
- 高CODhigh COD
- 水质指标water-quality index
- 低CODlow COD
- 水质污染危及所有海洋生物。Water pollution imperils all kinds of marine life.
- COD/PCOD/P
- 因为水质不纯净，所以不能饮用。Impurity of the water made it unfit to drink.
- CODαCODα
- 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CODcritical COD
- 灌排水质irrigation and drainage water quality
- COD测定COD determination
