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| 环形线 | |||
| 环形管线路 | |||
| 环形路线 | |||
| 环线; 回路管线 | |||
| 圈线; 回线; 环形线 (路); 环绕线 (路); 盘旋路; 盘山路线; 圏线 | |||
| 环形线路 | |||
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loop-line : 29 phrases in 10 subjects |
| Automobiles | 2 |
| Electronics | 7 |
| General | 1 |
| Information technology | 2 |
| Management | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 2 |
| Space | 1 |
| Technology | 5 |
| Telecommunications | 6 |