需氧量

• 5 - day biochemical oxygen demand bod 5
  五天生化需氧量
• Study on high speed determine way about biochemical oxygen demand of 5 day
  五日生化需氧量快速测定方法的研究
• Water quality - determination of the chemical oxygen demand - dichromate method
  水质化学需氧量的测定重铬酸盐法
• Cod . leachate . determination of the chemical oxygen demand . potassium dichromate method
  生活垃圾渗沥水.化学需氧量
• Experimental study on relevant influencing factors of cod in clear ash water
  澄清灰水化学需氧量相关因素的实验研究
• Bods apparatus for the estimation of biochemical oxygen demand with microbial sensor
  用微生物传感器评估生物化学需氧量
• Bod biochemical oxygen demand
  生化需氧量
• Bod ; biological oxygen demand
  生物需氧量
• Biochemical oxygen demand bo
  生化需氧量
• Municipal sewage . determination of chemical oxygen demand . potassium dichromate method
  城市污水.化学需氧量的测定.重铬酸钾法