 |
| |||
| 共同工作线 | |||
| 运营线铁路 (for railway) | |||
| 生产线 | |||
| 作业线; 操作线 | |||
| 特性曲线 | |||
| 工作线 (路); 操作管路 | |||
| 工作线 | |||
| operating line: 18 phrases in 12 subjects |
| Aviation | 1 |
| Bridge construction | 1 |
| Business | 1 |
| Drilling | 1 |
| Economy | 1 |
| Electronics | 3 |
| International trade | 1 |
| Metallurgy | 3 |
| Rail transport | 1 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 3 |