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| 上面部分 | |||
| 上部; 上半部分 | |||
| 金刚石钻头上体 | |||
| 上半断面 | |||
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upper section : 6 phrases in 4 subjects |
| Continuous casting | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 3 |
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