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| 挂片腐蚀试验 | |||
| 挂片试验 | |||
| coupon test: 16 phrases in 9 subjects |
| Automobiles | 2 |
| Aviation | 1 |
| Commerce | 1 |
| Drilling | 2 |
| Electronics | 2 |
| Information technology | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 3 |
| Technology | 3 |
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