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| 克氏［定氮］法 | |||
| 克氏方法测定蛋白氮的一种方法 | |||
| 克氏定氮法 | |||
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Kjeldahl method : 9 phrases in 6 subjects |
| Agriculture | 1 |
| Animal husbandry | 2 |
| Chemistry | 1 |
| Desert science | 2 |
| Technology | 2 |
| Water resources | 1 |
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