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| welding code; welding conditions | |||
| welding instructions | |||
| welding condition; welding schedule | |||
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焊接规范 : 10 phrases in 5 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 3 |
| Technology | 2 |
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