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| relief tube | |||
| run-off pipe | |||
| discharge tube | |||
| 泄放管: 31 phrases in 15 subjects |
| Automobiles | 2 |
| Aviation | 3 |
| Compressors | 2 |
| Construction | 2 |
| Drilling | 2 |
| Earth sciences | 1 |
| Electronics | 1 |
| General | 2 |
| Mechanics | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 5 |
| Oil processing plants | 1 |
| Port facilities | 1 |
| Space | 1 |
| Technology | 6 |
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