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| 土壤中固氮菌 | |||
| 固氮菌属 (Azotobacter Beijerinck，固氮菌科); 固氮菌 (Azotobacter sp.) | |||
| 固氮菌 | |||
| 定氮菌类 | |||
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| 固氮菌属 | |||
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azotobacter : 6 phrases in 4 subjects |
| Agriculture | 1 |
| Biology | 3 |
| Desert science | 1 |
| Latin | 1 |
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