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| 输送主管; 供水干管 | |||
| 给水干管; 给水总管; 输水干管 | |||
| flow main: 25 phrases in 11 subjects |
| Agriculture | 4 |
| Animal husbandry | 1 |
| Automobiles | 2 |
| Aviation | 2 |
| Earth sciences | 1 |
| Electronics | 1 |
| Engineering geology | 3 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 8 |
| Wind Energy | 1 |
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