Chemical Oxygen Demand (COD) is the representative index of sewage water.
化学需氧量(简称COD)是水质污染程度的代表性指标。
Chemical oxygen demand discharges: 30.3 billion tonnes (44% from agriculture).
化学需氧量：303亿吨(44%来自农业)。
Biochemical oxygen demand (BOD) is one of the most important indexes in water monitoring.
生化需氧量(BOD)是水质监测中最重要的指标之一。
The two methods used for measuring standard samples and all sewage biochemical oxygen demand.
用上述两种方法测定标准样品、各种污水的生化需氧量进行差异性比较。
The heavy demands of her job; the emotional demands of his marriage; an increased oxygen demand.
她工作的高强度要求；他婚姻上的情感要求；增长的氧气需求。
The reduction of myocardial oxygen demand is beneficial for patients with coronary heart disease.
降低心肌氧耗，有利于冠心病患者术中维持心肌供氧与需氧之间的平衡。
Recent advances in oxygen demand research have expanded the number of options available for testing.
最近在化学需氧量研究上的进展已扩大了可供测试方法选择的数量。
Biochemical oxygen demand - BOD: a measure of the amount of pollution by organic substances in water.
生化物需氧量(简写为BOD)：一种衡量有机物在水中的污染量的标准。
Chemical oxygen demand (COD) is a synthetical indicator which represents the degree of organic pollution in water.
化学需氧量(COD)是表征水体中有机物污染程度的一个综合性指标。
Biochemical oxygen demand — the measure of the oxygen demand placed on a stream by any particular volume of effluent.
生化耗氧量——在由特定容量排放的小河中氧需求的测量。
The current scope of major pollutants includes sulfur dioxide and chemical oxygen demand, a gauge of water pollution.
现在主要污染物的范围包括二氧化硫和化学需氧量，为一个衡量水污染程度的指标。
The Chemical Oxygen Demand(COD) and the Chromaticity Color ( CC) reduction rates were 93.94% and 64. 62% respectively.
经过微电解工艺处理的染料工业废水色度和化学需氧量（COD）去除率分别为93．94％和64.62％。
They are commonly measured in units of biochemical oxygen demand (BOD), or the amount of oxygen needed to decompose them.
常常使用生化需氧量，即有机物分解所需的氧这个单位进行测量。
It is concluded that SOUR best indicates the property and the oxygen demand of the sludge in intermittent aeration process.
试验表明SOUR对污泥性能有较强的指示作用，并能反映间歇曝气运行中污泥的需氧特性。
The method of flow injection analysis (FIA) is described for continuously measuring chemical oxygen demand (COD) in seawater.
利用流动注射分析技术（FIA）快速、连续测定海水化学耗氧量（COD）。
Measurements of the Chemical Oxygen Demand and the concentration of the anionic surfactants were used to follow the oxidation.
测量的化学需氧量和浓度的阴离子表面活性剂是用来跟踪氧化。
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％。
BOD (biochemical oxygen demand) is an important index to evaluate the quality of water in environmental monitoring and sewage treatment.
即生化需氧量，是环境监测与污水处理中评价水质的一项重要指标。
This paper discussed the influence on the biochemical oxygen demand, ammoniation and nitrosation by barium of different levels in water.
本文就不同浓度的钡对天然水的生化需氧过程、氨化及亚硝化过程的影响进行了探讨。
Biochemical oxygen demand, BOD is necessary for water quality evaluation. It is an important index in measuring organic materials pollution.
生物化学需氧量bod是水质评价的必测项目，是衡量有机物对水质污染的重要质量指标。
The purpose of studying the correlation of total organic carbon (TOC) with permanganate index and chemical oxygen demand (COD) has been stated.
叙述了研究总有机碳与高锰酸盐指数及化学需氧量相关关系的目的。
The result indicated that the main pollution target of this section is permanganate index, five days' biochemical oxygen demand and ammonia nitrogen.
评价结果表明：该段主要污染指标高锰酸盐指数、五日生化需氧量、氨氮。
Biochemical oxygen demand (BOD5) is one of the important indexes of organic pollution. It is also an important parameter of environmental monitoring.
生化需氧量(BOD5)是一个重要有机污染指标，是环境监测的重要参数之一。
The relationship between the mixed liquor suspended solid concentration, chemical oxygen demand and wastewater permeation pressure of the membrane was studied.
考察了废水中悬浮物浓度及化学需氧量与炭膜渗透压的关系。
Biochemical oxygen demand over five days - BOD5: The standard biochemical oxygen demand test whereby a sample of the liquid is incubated at 20 degrees C for five days.
五天生化需氧量（简写为BOD5）：标准的生化需氧量试验。其方法是把一份溶液的样品在摄氏20度下培养五天。
A method for the rapid and accurate determination of chemical oxygen demand (COD) using potassiumdichromate as oxidant under new conditions is described in this paper.
本文提出了一种以重铬酸钾为氧化剂在新的条件下快速及准确测定化学耗氧量（COD）的方法。
Chemical oxygen demand is an integrative index for evaluating the degrees of organic pollution in water, and is also one of the important parameters in water monitoring.
化学需氧量是评价水体有机污染程度的综合指标，也是水质监测的一个重要参数。
Chemical oxygen demand is an integrative index for evaluating the degrees of organic pollution in water, and is also one of the important parameters in water monitoring.
化学需氧量是评价水体有机污染程度的综合指标，也是水质监测的一个重要参数。
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