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| 水的软化 | |||
| 水质软化; 水脱矿物质; 除去水中矿物质 | |||
| water demineralization: 13 phrases in 6 subjects |
| Agriculture | 1 |
| Drilling | 1 |
| Electronics | 4 |
| Engineering geology | 1 |
| Metallurgy | 3 |
| Technology | 3 |
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