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| 转化涂层 | |||
| 预处理涂层粘接件 | |||
| 电镀层; 转化 (型涂料); 改性层 (金属表面) | |||
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| 转化涂料 | |||
| conversion coating: 8 phrases in 4 subjects |
| Metallurgy | 4 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 2 |
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