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| 单一阻碍 | |||
| 单滑轮滑车; 单块结构 | |||
| 单块; 简单字组; 单区组 | |||
| 单段 | |||
| 单滑车 | |||
| 整块; 单阻塞; 单轮滑车; 单轮车; 单滑轮; 单程序段; 单饼滑车 | |||
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single block : 57 phrases in 13 subjects |
| Automobiles | 3 |
| Aviation | 1 |
| Bridge construction | 1 |
| Business | 2 |
| Communications | 5 |
| Electronics | 1 |
| Metallurgy | 9 |
| Oil / petroleum | 1 |
| Plastics | 1 |
| Rail transport | 3 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 28 |
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