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单词 PH SCALE
释义

A scale used to measure the alkalinity and acidity of any substance that is soluble in water. The pH values are given from 1- 14. 7 is regarded as the neutral point, while those values that lie below 7 are acidic, and concurrently, values above 7 are considered to be alkaline.

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更新时间:2025/4/4 17:46:09