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| nitrogenous matter | |||
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氮物质 : 16 phrases in 9 subjects |
| Agriculture | 4 |
| Animal husbandry | 2 |
| Desert science | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Electronics | 2 |
| Molecular genetics | 1 |
| Technology | 3 |
| Water resources | 1 |
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