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防护 品 : 30 phrases in 12 subjects |
| Automobiles | 1 |
| Aviation | 3 |
| China | 3 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Hydroelectric power stations | 1 |
| Management | 1 |
| Nursing | 1 |
| Patents | 2 |
| Shipbuilding | 2 |
| Technology | 6 |
| Textile industry | 8 |
| Welding | 1 |
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