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| 力作用线 | |||
| 力线 | |||
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force line : 29 phrases in 11 subjects |
| Automobiles | 2 |
| Aviation | 1 |
| Bridge construction | 5 |
| Electric machinery | 3 |
| Electronics | 2 |
| General | 1 |
| Metallurgy | 3 |
| Space | 1 |
| Sports | 2 |
| Technology | 8 |
| Telecommunications | 1 |
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