| |||
| 标准溶液 | |||
|
set solution : 5 phrases in 5 subjects |
| Aviation | 1 |
| Information technology | 1 |
| Oil / petroleum | 1 |
| Scientific | 1 |
| Technology | 1 |
| |||
| 标准溶液 | |||
|
set solution : 5 phrases in 5 subjects |
| Aviation | 1 |
| Information technology | 1 |
| Oil / petroleum | 1 |
| Scientific | 1 |
| Technology | 1 |