“chemical oxygen demand”的概念、定义、翻译、参考文献-科学参考

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 demandCOD化学耗氧量；化学需氧量
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