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技术维护试验 | |||
维护试验 | |||
维护测试; 维护检查 |
maintenance test : 72 phrases in 14 subjects |
Air defense | 1 |
Architecture | 1 |
Automobiles | 1 |
Aviation | 31 |
Business | 8 |
Economy | 1 |
Electronics | 13 |
Hydroelectric power stations | 2 |
Navigation | 1 |
Rail transport | 1 |
Shipbuilding | 1 |
Space | 4 |
Technology | 6 |
Telecommunications | 1 |