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不可 用性 : 16 phrases in 10 subjects |
| Business | 1 |
| Commerce | 2 |
| Desert science | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Electronics | 1 |
| Information technology | 2 |
| Technology | 2 |
| Telecommunications | 4 |
| Wind Energy | 1 |
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