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| 缓冲存货; 调节性库存准备 | |||
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solution stock : 25 phrases in 7 subjects |
| Agriculture | 1 |
| Chemistry | 2 |
| Economy | 11 |
| Electronics | 1 |
| Laboratory equipment | 4 |
| Metallurgy | 1 |
| Technology | 5 |
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