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| 机械集中联锁 | |||
| 机械联动锁 | |||
| 机械联锁; 机械闭锁 | |||
| 机械缠结; 机械联结 | |||
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mechanical interlocking : 7 phrases in 3 subjects |
| Communications | 2 |
| Rail transport | 1 |
| Technology | 4 |
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