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谱线证认 | |||
管道标记; 管线标记 | |||
线路标识 |
line identification: 52 phrases in 11 subjects |
Advertising | 1 |
Artificial intelligence | 1 |
Aviation | 2 |
Communications | 5 |
Electronics | 15 |
General | 2 |
Information technology | 11 |
Rail transport | 3 |
Space | 2 |
Technology | 5 |
Telecommunications | 5 |