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| 防气阀; 防气弯管〔活门〕; 空气阱 | |||
| 气锁 | |||
| 空气捕集器 | |||
| 空气阱 | |||
| 通风口; 空气阀 | |||
| 捕气器; 分气器; 空气分离器 | |||
| 气封口; 提高混凝土和易性的化学掺和料; 防气弯管; 防气阀 (门); 气阱; 空气收集器; 空气井; 隔气具; 阻气盒; 隔气阱; 气闸 | |||
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| 气穴〔阱，潭〕; 阻气器; 空气分离器; 隔气具; 防气弯管〔活门〕; 空气收集器 | |||
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| 气泡; 麻孔; 气窝 | |||
| air trap: 7 phrases in 3 subjects |
| Metallurgy | 1 |
| Rail transport | 1 |
| Technology | 5 |
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