| |||
| 操作原理 | |||
|
operation principle : 15 phrases in 10 subjects |
| Air defense | 1 |
| Business | 4 |
| Economics | 1 |
| Environment | 1 |
| Hydroelectric power stations | 1 |
| Microelectronics | 1 |
| Refrigeration | 1 |
| Space | 2 |
| Technology | 1 |
| Telecommunications | 2 |
| |||
| 操作原理 | |||
|
operation principle : 15 phrases in 10 subjects |
| Air defense | 1 |
| Business | 4 |
| Economics | 1 |
| Environment | 1 |
| Hydroelectric power stations | 1 |
| Microelectronics | 1 |
| Refrigeration | 1 |
| Space | 2 |
| Technology | 1 |
| Telecommunications | 2 |