 |
| |||
| 不燃〔烧〕的; 不燃烧的 | |||
| 不燃烧的 | |||
| non-burning: 5 phrases in 4 subjects |
| Metallurgy | 1 |
| Nautical | 1 |
| Plastics | 2 |
| Polymers | 1 |
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