| |||
| 变量法 | |||
|
method of variable : 17 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Business | 5 |
| Ecology | 1 |
| Oil / petroleum | 1 |
| Polymers | 1 |
| Space | 1 |
| Technology | 5 |
| |||
| 变量法 | |||
|
method of variable : 17 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Business | 5 |
| Ecology | 1 |
| Oil / petroleum | 1 |
| Polymers | 1 |
| Space | 1 |
| Technology | 5 |