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並前往https://environment.des.qld.gov.au/__data/assets/pdf_file/0022/90148/data-handling-units-and-concentrations.pdf

data-handling-units-and-concentrations.pdf

However, units expressed as parts per a number (e.g. parts per million, ppm) ... g/L or. g.L-1 mg/mL or mg.mL-1 μg/μL or μg.μL-1. Parts per million ppm.

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