| |||
| 原料; 原始材料; 涂装基体材料 | |||
| 母材 | |||
| 基本原料 | |||
| 碱性材料 | |||
| 基础材料; 基本原料 | |||
| 基础材料; 基础资料; 原材料 | |||
| 主料; 基本材料 | |||
|
basic material : 12 phrases in 8 subjects |
| Bridge construction | 2 |
| Commerce | 1 |
| Economics | 1 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 1 |
| Technology | 3 |
| Textile industry | 2 |