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分级注水泥法 | |||
分级法 |
stage method : 49 phrases in 12 subjects |
Bridge construction | 2 |
Business | 5 |
Earth sciences | 2 |
Engineering geology | 2 |
Hydroelectric power stations | 1 |
Metallurgy | 8 |
Oil / petroleum | 5 |
Rail transport | 1 |
Space | 4 |
Technology | 17 |
Textile industry | 1 |
Water resources | 1 |