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pH

英美 ['pi 'etʃ]

abbr. 酸碱度符号（描述氢离子活度的）

双语例句

1. Skin is naturally slightly acidic and has a pH of 5.5.: 皮肤具有天然弱酸性，pH值为5.5。

2. A pH test measures the acidity or alkalinity of a substance.: pH值测试可检测物质的酸碱度。

3. a pH of 7.5: pH值7.5

4. The fluid that emerges from the vents is acidic (pH 3) and hot.: 从那些出口出来的液体呈酸性（pH值为3），且是热的。

5. pH is a measure of the concentration of free hydrogen atoms in a solution.: pH值是测试溶液中自由氢原子浓度的单位。