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| 氢离子电势; 酸度; pH值氢离子浓度倒数的对数 | |||
| 酸碱度 | |||
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potential of Hydrogen : 7 phrases in 5 subjects |
| Earth sciences | 1 |
| Electronics | 2 |
| Technology | 1 |
| Textile industry | 2 |
| Water resources | 1 |
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