spark proof
| material
| spark-proof | |
| pow.el. | 防火花的 |
| material | |
| anim.husb. | 物质; 原料; 材料 |
| chem. | 物料 |
| f.trade. | 面料; 用料; 材 料; 大大地 |
| materials | |
| scient. | 用具; 设备 |
| |||
| 防火花的 | |||
|
spark proof : 2 phrases in 2 subjects |
| Materials science | 1 |
| Shipbuilding | 1 |