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标准壁厚管 | |||
标准管 |
standard pipe : 55 phrases in 14 subjects |
Architecture | 1 |
Automobiles | 2 |
Aviation | 11 |
Drilling | 3 |
Earth sciences | 2 |
Economy | 1 |
General | 6 |
Mechanic engineering | 2 |
Mechanics | 3 |
Metallurgy | 4 |
Oil / petroleum | 2 |
Shipbuilding | 1 |
Technology | 16 |
Water resources | 1 |