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| 工字铁; 双槽钢; 工字铁钢 | |||
| 工字钢; 工字梁; 工钢; 工字形 | |||
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| 工字钢; 工字铁 | |||
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двутавр : 5 phrases in 2 subjects |
| Construction | 1 |
| General | 4 |
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