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heavy gauge; large section |
大断面: 52 phrases in 12 subjects |
Automobiles | 1 |
Bridge construction | 1 |
Desert science | 2 |
Earth sciences | 6 |
Engineering geology | 1 |
Geology | 2 |
Hydroelectric power stations | 1 |
Metallurgy | 10 |
Rail transport | 2 |
Refrigeration | 1 |
Technology | 24 |
Water resources | 1 |