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| 风管〔筒〕; 用管道输送 (连接) | |||
| 管道系统 | |||
| 管道; 管系; 导管系统; 用管道输送; 用管道连接; 大气波导现象 | |||
| 管道系统; 管线 | |||
| 大气波导; 管道传播 | |||
| 烟道; 风管 | |||
| 通道; 导管; 导通 | |||
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| 沿管道输送增压,流过 | |||
| 通过管道输送 | |||
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ducting : 50 phrases in 13 subjects |
| Architecture | 1 |
| Automobiles | 11 |
| Aviation | 2 |
| Business | 1 |
| Chemistry | 3 |
| Economics | 2 |
| Electric machinery | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 2 |
| Sealing | 2 |
| Space | 1 |
| Technology | 19 |
| Telecommunications | 3 |