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| 逆转时间 (轧机的) | |||
| 换向时间 | |||
| reversal time: 18 phrases in 9 subjects |
| Aviation | 1 |
| Business | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| Mathematics | 2 |
| Metallurgy | 3 |
| Space | 1 |
| Statistics | 4 |
| Technology | 4 |
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