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| 十字砌合层砌体断裂 (序); 隔断砌层 | |||
| 断层 | |||
| 断序; 断裂; 隔断层; 十字砌合层 | |||
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broken course : 7 phrases in 2 subjects |
| Bridge construction | 3 |
| Technology | 4 |
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