| |||
| 交换主程序 | |||
|
switch master : 26 phrases in 11 subjects |
| Automobiles | 4 |
| Aviation | 3 |
| Drilling | 1 |
| Electric machinery | 1 |
| General | 1 |
| Geophysics | 1 |
| Metallurgy | 2 |
| Scientific | 1 |
| Space | 1 |
| Technology | 8 |
| Telecommunications | 3 |
| |||
| 交换主程序 | |||
|
switch master : 26 phrases in 11 subjects |
| Automobiles | 4 |
| Aviation | 3 |
| Drilling | 1 |
| Electric machinery | 1 |
| General | 1 |
| Geophysics | 1 |
| Metallurgy | 2 |
| Scientific | 1 |
| Space | 1 |
| Technology | 8 |
| Telecommunications | 3 |