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| |||
| 固定头 | |||
| 固定头盖板; 固定磁头 | |||
| 固定磁头 | |||
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| 固定头 | |||
| 车辆/车身封闭的; 固定式的顶盖; 硬顶; 发动机气缸盖与气缸体成一整体的 | |||
| fixed head: 39 phrases in 12 subjects |
| Automobiles | 6 |
| Aviation | 1 |
| Electronics | 10 |
| Engineering geology | 2 |
| Information technology | 4 |
| Mathematics | 1 |
| Multimedia | 1 |
| Plastics | 1 |
| Space | 5 |
| Technology | 4 |
| Telecommunications | 3 |
| Water resources | 1 |
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