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| 平型双头夹板 | |||
| 长方形鱼尾板; 扁平鱼尾板; 扁平接缝板; 轨道的平接缝板; 平型鱼尾板 | |||
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flat joint bar : 4 phrases in 2 subjects |
| Rail transport | 3 |
| Technology | 1 |
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