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单词
chemical oxygen demand
释义
chemical oxygen demand
Encyclopedia
理学
环境分析
释
chemical oxygen demand；COD
化学需氧量
水样在一定条件下，以氧化1升水样中还原性物质所消耗的氧化剂的量为指标，折算成每升水样全部被氧化后，需要的氧的毫克数。以毫克/升表示。化学需氧量反映了水中受还原性物质污染的程度，也是有机物相对含量的综合指标之一。
Chemistry
＞分析化学＞化学分析＞释义
chemical oxygen demand (COD)
化学需氧量
Biology
chemical oxygen demand
COD
化学耗氧量；化学需氧量
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inelastic scattering
inelastic scattering cross section
inelastic scattering cross-section
inelastic scattering excitation
inelastic tunneling
inelastic X-ray scattering
inelastic X-ray spectroscopy
inelastic X-ray spectroscopy, IXS
inellipse
Inema Arts Center
in-engine purification
inequality
inequality constraint
inequality for a variance
inequality index
inequality-in-fact among nationalities
inequality information
inequality of academic achievement
inequality of coercivity
inequality of educational opportunity
inequality of exponential type
inequality of higher order
inequality of opposite sense
inequality of the same direction
inequality of the same sense
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