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| material and appliances | |||
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材料和设备 : 14 phrases in 9 subjects |
| Air defense | 1 |
| Business | 1 |
| Construction | 1 |
| Earth sciences | 1 |
| Economy | 4 |
| Nautical | 1 |
| Oil / petroleum | 2 |
| Project management | 1 |
| Technology | 2 |
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