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| 泄压通气管 | |||
| 辅助排气孔; 辅助排气管; 辅助排气口; 辅助透气管; 安全通气管; 安全通风管; 辅助通气辅助透气管与污水立管连接的透气方式 | |||
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relief vent : 12 phrases in 4 subjects |
| Accumulators | 1 |
| Metallurgy | 2 |
| Space | 2 |
| Technology | 7 |
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