 |
| |||
| choke valve (TEOC) | |||
| service valve | |||
| production gate valve; production valve; production gate | |||
| эксплуатационная задвижка: 3 短语, 2 学科 |
| 油和气 | 2 |
| 油田 | 1 |
|
| |||
| choke valve (TEOC) | |||
| service valve | |||
| production gate valve; production valve; production gate | |||
| эксплуатационная задвижка: 3 短语, 2 学科 |
| 油和气 | 2 |
| 油田 | 1 |