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| double-charge ion | |||
| divalent ion; two-charge ion | |||
| divalention; bivalention | |||
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二价 离子 : 17 phrases in 6 subjects |
| Chemistry | 1 |
| General | 2 |
| Metallurgy | 3 |
| Oil / petroleum | 4 |
| Technology | 3 |
| Water resources | 4 |
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