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| 减〔隔〕声器 | |||
| 减声器; 隔声器 | |||
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| 消声器材料，涂料 | |||
| 减音装置 | |||
| 声阻尼材料 | |||
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sound-deadener : 1 phrase in 1 subject |
| Automobiles | 1 |
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