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- Total organic carbon (TOC) and chemical oxygen demand (COD) and biological oxygen demand (BOD5) are commonly used to show organic polutant water. 在水质监测中通常应用TOC、COD、BOD_5间接反映水体受到有机物污染的程度。
- electrolytic biological oxygen demand 电解质生物氧需求
- After the sewage is defecated by the resin,the sorption efficiency of Chemical Oxygen Demand (COD) and Biologics Oxygen Demand (BOD5) reach 70.15% and 77.66%,respectively. 树脂在甲苯蒸汽环境中，3h后增重31.;2%25； 污水经树脂处理后化学需氧量（COD）、生化需氧量（BOD5）的吸除效率分别达70
- Review on determination methods of Biological Oxygen Demand (BOD) 生化需氧量(BOD)测定方法综述
- Water contains hydrogen and oxygen. 水含有氢和氧。
- Approach on Kinetic Model of Chemical and Biological Oxygen Demand by Sediments 底泥生物与化学需氧动力学模式的探讨
- Some biological molecules have the form of a helix. 有些生物分子呈螺旋状。
- Oxygen enters into many compound bodies. 氧是许多化合物的组成部分。
- The school has a large biological laboratory. 这所学校有一个很大的生物实验室。
- Mars is too dry and poor in oxygen. 火星上面过于干燥，并且缺乏氧气。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。
- Fish take in oxygen through their gills. 鱼通过鳃摄取氧气。
- A System of Microcomputer Analysis for Biological Oxygen Consumption and Its Application 生物氧耗微机分析系统及其应用
- The oxygen react vigorously with the impurity in the iron. 氧气与铁中的杂质发生剧烈的化学反应。
- The oxygen workshop caught fire and set off a chain of explosions. 氧气车间着了火，引起了一连串的爆炸。
- Plants can absorb carbon dioxide and release oxygen. 植物可以吸收二氧化碳释放氧气。
- The convention bans the stockpiling of biological weapons. 该公约禁止储存生物武器。
- AN OXYGEN BALANCE MODEL FOR FISH OVERWINTERING PONDS WITH BIOLOGICAL OXYGEN ENRICHMENT BELOW ICE 越冬池冰下生物增氧的一个氧气平衡模式
- Water is composed of the elements hydrogen and oxygen. 水是由氢元素和氧元素组成的。
- The application of mathematical principles to biological processes. 生物数学应用于生物学过程的数学原理
