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| 双头式 | |||
| 大头T形管; 堤岸; 挡土水墙; 圆头丁砖; 平板箱形孔型; 双头式 (大圆头); 露顶侧砖; 小圆头 | |||
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bull head rail : 16 phrases in 3 subjects |
| Architecture | 2 |
| Rail transport | 1 |
| Technology | 13 |
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