 |
| |||
| 壳牌公司法由丁烯制丁二烯法 | |||
| |||
| 包壳料球法 | |||
|
Shell process : 24 phrases in 11 subjects |
| Automobiles | 1 |
| Chemistry | 6 |
| Construction | 1 |
| Engineering geology | 1 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 3 |
| Mining | 1 |
| Oil processing plants | 4 |
| Plastics | 2 |
| Technology | 3 |
|
| |||
| 壳牌公司法由丁烯制丁二烯法 | |||
| |||
| 包壳料球法 | |||
|
Shell process : 24 phrases in 11 subjects |
| Automobiles | 1 |
| Chemistry | 6 |
| Construction | 1 |
| Engineering geology | 1 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 3 |
| Mining | 1 |
| Oil processing plants | 4 |
| Plastics | 2 |
| Technology | 3 |