 |
| |||
| 水泥试验; 水泥检验; 水泥质量检验 | |||
| cement test: 17 phrases in 5 subjects |
| Drilling | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Technology | 13 |
|
| |||
| 水泥试验; 水泥检验; 水泥质量检验 | |||
| cement test: 17 phrases in 5 subjects |
| Drilling | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Technology | 13 |