| |||
outer limit | |||
physical boundary | |||
physical barrier |
физический предел : 15 phrases in 10 subjects |
Aviation | 1 |
Construction | 1 |
Energy system | 1 |
General | 1 |
Mass media | 5 |
Metal science | 1 |
Oil and gas | 1 |
Physics | 2 |
Power system protection | 1 |
Software | 1 |