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| 成层毛石垢工; 铺砌毛石 | |||
| 成层毛石圬工 | |||
| 层砌毛石; 成层毛石砌体; 成层毛石; 成层粗石圬工; 成层粗石砌体 | |||
| coursed rubble: 42 phrases in 5 subjects |
| Architecture | 6 |
| Bridge construction | 3 |
| Electronics | 2 |
| Engineering geology | 1 |
| Technology | 30 |
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