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來源: 螺絲螺帽 於 2024-01-16 08:30:04 [] [博客] [舊帖] [給我悄悄話] 本文已被閱讀： 次 (906 bytes)
回答: 坑：歡迎跳啊， 都是中國的事情 由 螺絲螺帽 於 2023-12-19 18:47:54 
The pH value indicates the acidity and alkalinity of sewage. It is the logarithmic value of the reciprocal of the hydrogen ion concentration in water. Its range is 0-14. If the pH value is equal to 7, the water is neutral. If it is less than 7, it is acidic. The smaller the value, the stronger the acidity. If it is greater than 7, it is alkaline. The larger it is, the more alkaline it is.
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