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bolster work; timber man; tunnel jointer |
支撑工 : 36 phrases in 11 subjects |
Architecture | 2 |
Automobiles | 2 |
Aviation | 1 |
Compressors | 1 |
Electronics | 1 |
Engineering geology | 2 |
Explosives and Explosive Ordnance Disposal | 2 |
Information technology | 2 |
Metallurgy | 3 |
Steel production | 1 |
Technology | 19 |