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保护涂层 : 39 phrases in 14 subjects |
Architecture | 4 |
Aviation | 1 |
Communications | 1 |
Drilling | 1 |
Economy | 1 |
Electronics | 1 |
General | 1 |
Hydroelectric power stations | 2 |
Metallurgy | 4 |
Nautical | 3 |
Plastics | 3 |
Rail transport | 1 |
Shipbuilding | 2 |
Technology | 14 |