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化学需氧量
化學需氧量
huàxuéxūyǎngliàng
1. chemical oxygen demand (an environmental indicator)

Character Breakdown

化
huà
to change, to convert, to reform; -ize
HSK 3 4 丶
学
xué
learning, knowledge, science; to study, to go to school; -ology
HSK 1 8 丶
需
xū
to need, to require; must
HSK 3 14 丶
氧
yǎng
oxygen
HSK 6 10 丶
量
liàng
measure, volume; amount, quantity
HSK 4 12 丶

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Category
Chinese