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| 排气旋塞 | |||
| 排气旋塞阀 | |||
| 排汽阀; 排泄栓; 排泄龙头; 排污旋塞; 排气阀; 吹除开关; 排气栓 | |||
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| 排泄旋塞 | |||
| 排气栓; 放气阀 | |||
| blow-off cock: 4 phrases in 3 subjects |
| Nautical | 1 |
| Shipbuilding | 1 |
| Technology | 2 |
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