| |||
breathing apparatus | |||
oxygen apparatus | |||
breathing equipment; oxygen-breathing apparatus; oxygen equipment; oxygen installation |
氧气设备: 25 phrases in 8 subjects |
Aviation | 7 |
Ecology | 1 |
Electronics | 1 |
General | 1 |
Metallurgy | 2 |
Nautical | 2 |
Space | 4 |
Technology | 7 |