| |||
| 脉冲控制调制 | |||
|
pulse control modulation : 4 phrases in 3 subjects |
| Automated equipment | 1 |
| Hydroelectric power stations | 1 |
| Space | 2 |
| |||
| 脉冲控制调制 | |||
|
pulse control modulation : 4 phrases in 3 subjects |
| Automated equipment | 1 |
| Hydroelectric power stations | 1 |
| Space | 2 |