| |||
| 改进技术 | |||
|
modified technique : 9 phrases in 5 subjects |
| Automobiles | 5 |
| Earth sciences | 1 |
| Electronics | 1 |
| Food industry | 1 |
| Geophysics | 1 |
| |||
| 改进技术 | |||
|
modified technique : 9 phrases in 5 subjects |
| Automobiles | 5 |
| Earth sciences | 1 |
| Electronics | 1 |
| Food industry | 1 |
| Geophysics | 1 |