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| 自动气闸风闸 | |||
| 自动气刹车 | |||
| 自动空气制动器 | |||
| 自动风闸; 自动气闸; 自动气阀; 自动空气制动机 | |||
| automatic air brake: 5 phrases in 2 subjects |
| Rail transport | 3 |
| Technology | 2 |
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