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| 发动机点火管; 热管 | |||
| 引燃管 | |||
| 点火管 | |||
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ignition tube : 7 phrases in 5 subjects |
| Automobiles | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 1 |
| Space | 3 |
| Technology | 1 |
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