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| 直径一长度比 | |||
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diameter-to- length ratio : 14 phrases in 8 subjects |
| Aviation | 1 |
| Electric machinery | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 2 |
| Plastics | 3 |
| Polymers | 1 |
| Space | 3 |
| Technology | 2 |
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