ppm
(medicine, archaic) A mass of fat found internally; also, a fatty tumor.
(initialism) (common) Parts per million. (10000 ppm = 1%) / (initialism) page(s) per minute
To read again.
(obsolete) quagmire; marsh; bog.
研究室は試料中の溶存酸素濃度を150百万分率と測定した。
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