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| 周期断面; 循环变化断面; 周期断面型材; 周期变化断面; 周期断面型材周期变化断面 | |||
| 变截面型材; 规律截面型材; 周期断面钢材 | |||
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периодический профиль : 25 phrases in 5 subjects |
| Construction | 5 |
| General | 9 |
| Metallurgy | 1 |
| Oil and gas | 1 |
| Technology | 9 |
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