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| 上部角钢 (钢梁上部设置的); 顶尖角; 顶端角钢 (钢梁上部设置的); 钢梁端部设置的顶端紧固角钢 | |||
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top angle : 9 phrases in 3 subjects |
| Oil / petroleum | 2 |
| Rail transport | 1 |
| Technology | 6 |
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