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| final layer; final paint coat | |||
| 末层: 45 phrases in 12 subjects |
| Automobiles | 2 |
| Chemistry | 2 |
| Electronics | 1 |
| Engineering geology | 1 |
| General | 1 |
| Medical | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 10 |
| Plastics | 2 |
| Polymers | 2 |
| Space | 1 |
| Technology | 19 |
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