![]() |
| |||
mass ratio | |||
relative mass |
相对 质量 : 47 phrases in 13 subjects |
Business | 1 |
Chemistry | 3 |
Commerce | 1 |
Compressors | 3 |
Drilling | 1 |
Electronics | 2 |
Explosives and Explosive Ordnance Disposal | 2 |
Nautical | 1 |
Oil / petroleum | 2 |
Physics | 5 |
Plastics | 17 |
Space | 2 |
Technology | 7 |