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应力点 : 33 phrases in 11 subjects |
| Automobiles | 3 |
| Bridge construction | 2 |
| Construction | 1 |
| Electronics | 3 |
| Engineering geology | 2 |
| Explosives and Explosive Ordnance Disposal | 3 |
| Metallurgy | 3 |
| Oil / petroleum | 3 |
| Plastics | 1 |
| Space | 1 |
| Technology | 11 |
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