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| 氢离子浓度的负对数; 酸碱度 (pH) | |||
| 酸碱度; PH值 | |||
| 酸碱度 (pH value) | |||
| 氢离子浓度 | |||
| English thesaurus | |||
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| PH | |||
| power of hydrogen: 5 phrases in 2 subjects |
| Earth sciences | 2 |
| General | 3 |
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