 |
| |||
| heating gas; commercial and industrial gas | |||
| manufactured gas | |||
| |||
| manufactured gases | |||
| industrial gases | |||
|
technisches Gas : 3 短语, 3 学科 |
| 地球科学 | 1 |
| 经济 | 1 |
| 能源行业 | 1 |
|
| |||
| heating gas; commercial and industrial gas | |||
| manufactured gas | |||
| |||
| manufactured gases | |||
| industrial gases | |||
|
technisches Gas : 3 短语, 3 学科 |
| 地球科学 | 1 |
| 经济 | 1 |
| 能源行业 | 1 |