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| 单位质量的作用力 | |||
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mass power : 23 phrases in 10 subjects |
| Automobiles | 4 |
| Business | 2 |
| Chemistry | 1 |
| Economy | 2 |
| Electronics | 2 |
| International trade | 1 |
| Nautical | 2 |
| Rail transport | 1 |
| Space | 1 |
| Technology | 7 |
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