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| electron-beam welder | |||
| electron beam welding machine | |||
| electron beam welder | |||
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| electron-beam welder; electron-beam welding machine | |||
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电子束 焊 机 : 4 phrases in 3 subjects |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Technology | 2 |
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