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| sistema químico | |||
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chemical system : 40 phrases in 11 subjects |
| Chemistry | 15 |
| Earth sciences | 1 |
| Electronics | 3 |
| General | 5 |
| Health care | 1 |
| Law | 6 |
| Life sciences | 1 |
| Natural sciences | 2 |
| Technology | 1 |
| Transport | 2 |
| United Nations | 3 |
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