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| 平衡力 | |||
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balance force : 30 phrases in 10 subjects |
| Automobiles | 8 |
| Aviation | 4 |
| Chemistry | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 1 |
| Labor law | 1 |
| Oil / petroleum | 2 |
| Space | 7 |
| Technology | 3 |
| Wind Energy | 2 |
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