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| 闭式模型 | |||
| 封闭模型 | |||
| 封闭性模型; 封闭式模型; 闭模型 | |||
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closed model : 9 phrases in 5 subjects |
| Aviation | 1 |
| Business | 2 |
| Management | 4 |
| Space | 1 |
| Technology | 1 |
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