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| 舌簧扬声器 (喇叭) | |||
| 舌簧扬声器［舌簧喇叭］ | |||
| 舌簧扬声器; 舌簧喇叭 | |||
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armature loudspeaker : 5 phrases in 2 subjects |
| Shipbuilding | 1 |
| Technology | 4 |
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