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| 单个刹车盘 | |||
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single disk : 21 phrases in 8 subjects |
| Agriculture | 7 |
| Computers | 1 |
| Electronics | 4 |
| Metallurgy | 1 |
| Multimedia | 2 |
| Project management | 1 |
| Technology | 2 |
| Wind Energy | 3 |
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