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| |||
| barrier material | |||
| shielding material | |||
| proofing material; protective material | |||
| lagging material | |||
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防护材料 : 10 phrases in 9 subjects |
| Aviation | 1 |
| Business | 1 |
| Dentistry | 1 |
| General | 1 |
| Nautical | 1 |
| Nuclear physics | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 2 |
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