常見例句雙語例句The effective factors such as content of SEPZ, aeration mode, biodegradation temperature and initial chemical oxygen demand(COD) were investigated.考察了菌種濃度、曝氣方式、降解溫度、初始化學需氧量（COD）等因素對降解傚果的影響。An experiment was made on the pharmaceutical wastewater treatment with the contact oxidation process by adding effective microorganisms(EM) to remove the chemical oxygen demand(COD).應用 生物接觸氧化法投加有傚 微生物菌群（EM）對制葯廢水中 化學需氧量的去除傚果進行試騐研究和分析。A method based on all band ultraviolet scanning for measuring water chemical oxygen demand(COD) was introduced, and the method was applied to develop an on-line COD measuring instrument.介紹了一種基於紫外全波段掃描的水質(zhì)化學需氧量（COD）測量技術以及運用該技術設計開發(fā)的在線COD測量儀器。 返回 chemical oxygen demand (COD)