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| atmospheric vent; blowdown pipe | |||
| blow-down pipe; vent pipe | |||
| blow down stack; blowdown tube; exhaust pipe | |||
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放空 管 : 29 phrases in 11 subjects |
| Air defense | 2 |
| Architecture | 1 |
| Aviation | 1 |
| Chemistry | 1 |
| Compressors | 1 |
| Drilling | 3 |
| Electronics | 2 |
| General | 1 |
| Oil / petroleum | 7 |
| Polymers | 1 |
| Technology | 9 |
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