chemical oxygen demand

常见例句

Chemical oxygen demand discharges: 30.3 billion tonnes (44% from agriculture)
化学需氧量：303亿吨（44%来自农业）
Sulfur dioxide emissions and chemical oxygen demand kept falling, down 5.95% and 4.42% respectively, and this trend became more firmly set.
二氧化硫、化学需氧量排放量减少的势头得到巩固，全年分别下降5．95％和4．42％。
According to the study agriculture is responsible for 43.7% of the nation's chemical oxygen demand (the main measure of organic compounds in water) 67% of phosphorus and 57% of nitrogen discharges
研究表明，水质43.7%的化学需氧量（测量水质有机化合物的主要指标）、67%的含磷量和57%含氮量应归咎于农业。

China also missed its target for chemical oxygen demand, a measure of water pollution.
FORBES: Ending China Pollution An Uphill Battle