| |||
guard relay | |||
protection relay | |||
conservation relay; keep relay | |||
protect relay; protective relay | |||
| |||
keep relay |
保护继电器 : 61 phrases in 11 subjects |
Air defense | 2 |
Automobiles | 4 |
Electric machinery | 10 |
Electronics | 16 |
Hydroelectric power stations | 2 |
Information technology | 1 |
Metallurgy | 3 |
Rail transport | 2 |
Refrigeration | 1 |
Technology | 18 |
Telecommunications | 2 |