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| rock waste; scoria cinder | |||
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岩渣 : 37 phrases in 8 subjects |
| Construction | 1 |
| Desert science | 1 |
| Engineering geology | 4 |
| Explosives and Explosive Ordnance Disposal | 2 |
| Geology | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 2 |
| Technology | 25 |
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