 |
| 化工原料: 10 phrases in 8 subjects |
| Business | 1 |
| Desert science | 1 |
| Earth sciences | 1 |
| Economy | 1 |
| Exhibitions | 1 |
| Oil / petroleum | 1 |
| Plastics | 1 |
| Technology | 3 |
|
| 化工原料: 10 phrases in 8 subjects |
| Business | 1 |
| Desert science | 1 |
| Earth sciences | 1 |
| Economy | 1 |
| Exhibitions | 1 |
| Oil / petroleum | 1 |
| Plastics | 1 |
| Technology | 3 |