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| standard sieve series | |||
| standard sieve number (美国) | |||
| 标准筛 号: 7 phrases in 6 subjects |
| Agriculture | 1 |
| Animal husbandry | 2 |
| Desert science | 1 |
| Ecology | 1 |
| Economy | 1 |
| Metallurgy | 1 |
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