part per million (ppm) 中文意思是什麼
part per million (ppm)
解釋
百萬分比-
Among the water quality indicators, cfu - 100ml means the number of colony forming units in 100 ml water ; ntu means nephelometric turbidity unit, and for drinking water, 1 mg l 1 ppm one part per million
水質指標單位中, cfu 100ml表示每100毫升水樣中菌落形成單位數colony forming unit : ntu為濁度表示單位nephelometric turbidity unit 。對飲用水而言, 1mg l毫克每公升1ppm百萬分之一含量。 -
As for drinking water, 1mg l mini gram per liter 1 ppm part per million
對飲用水而言, 1mg l毫克每公升1 ppm百萬分之一含量。 -
Part per million abbr. ppm
兆北率百萬分之幾
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