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| on-off time | |||
| break time | |||
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开 断 时间 : 45 phrases in 13 subjects |
| Automobiles | 5 |
| Commerce | 1 |
| Electricity generation | 2 |
| Electronics | 17 |
| General | 1 |
| Hydroelectric power stations | 3 |
| Industry | 1 |
| Information technology | 1 |
| Metallurgy | 2 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 9 |
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