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| 调节风门; 气闸; 气流调节器; 减速器; 减震器; 缓冲器; 消声器; 阻尼器; 制动器 | |||
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ダンパー : 70 phrases in 3 subjects |
| Cables and cable production | 1 |
| Superconductivity | 2 |
| Technology | 67 |
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