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生化需氧量

Mandarin · pinyin shēng huà xū yǎng liàng

(environmental science) biochemical oxygen demand; BOD

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Characters in this entry

生: shēng · life, living, lifetime; birth
化: huà · change, convert, reform; -ize
需: xū · need, require, must; hexagram ䷄
氧: yǎng · oxygen (element 8, O)
量: liàng · measure, quantity, capacity

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1–4–1–3–4 · sheng1 hua4 xu1 yang3 liang4

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