| |||
向N 定向播送M (N) |
beam-to : 39 phrases in 11 subjects |
Air defense | 3 |
Bridge construction | 3 |
Construction | 1 |
Electronics | 2 |
Engineering geology | 3 |
Gymnastics | 2 |
Oil / petroleum | 2 |
Optics branch of physics | 1 |
Public security | 1 |
Scientific | 3 |
Technology | 18 |