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| 平行线 | |||
| 平行直线 | |||
| 并联管道; 复线 | |||
| 并行线路; 并联线路; 平行直线 | |||
| |||
| 平行线 | |||
| parallel lines: 30 phrases in 11 subjects |
| Air defense | 1 |
| Cables and cable production | 1 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Securities | 1 |
| Statistics | 2 |
| Technology | 18 |
| Textile industry | 1 |
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