 |
| |||
| 晶体检波器保护装置; 晶体保护开关 | |||
| 晶体检波器保护器 | |||
| 晶体闸; 晶体保护器 | |||
| crystal shutter: 6 phrases in 5 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Electronics | 1 |
| Project management | 1 |
| Space | 2 |
|
| |||
| 晶体检波器保护装置; 晶体保护开关 | |||
| 晶体检波器保护器 | |||
| 晶体闸; 晶体保护器 | |||
| crystal shutter: 6 phrases in 5 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Electronics | 1 |
| Project management | 1 |
| Space | 2 |