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| 体积与表面比 | |||
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volume -surface ratio : 25 phrases in 10 subjects |
| Agriculture | 1 |
| Automobiles | 8 |
| Drilling | 2 |
| Engineering geology | 1 |
| Metallurgy | 1 |
| Mining | 1 |
| Oil / petroleum | 2 |
| Polymers | 1 |
| Space | 1 |
| Technology | 7 |
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