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| 钣金作业; 薄金属板加工 | |||
| 金属薄板加工 | |||
| 钣金加工 | |||
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| 金属薄板加工 | |||
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sheet-metal working : 3 phrases in 3 subjects |
| Computer numerical control | 1 |
| Technology | 1 |
| Wind Energy | 1 |
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