 |
| |||
| downhand welding; flat position welding; gravity position welding; horizontal position welding | |||
|
soudage horizontal : 11 短语, 2 学科 |
| 冶金 | 7 |
| 行业 | 4 |
|
| |||
| downhand welding; flat position welding; gravity position welding; horizontal position welding | |||
|
soudage horizontal : 11 短语, 2 学科 |
| 冶金 | 7 |
| 行业 | 4 |