 |
| |||
| fur; scale; tartar (in kettle) | |||
| scale deposit; incrustation | |||
| scale, boiler scale | |||
| boiler furring; furring incrustation; scale tartar | |||
| fouling (of a boiler) | |||
| boiler scale; lime deposit; scales | |||
| |||
| scale | |||
| Kesselstein: 11 phrases in 4 subjects |
| Chemistry | 1 |
| Mechanic engineering | 7 |
| Metallurgy | 2 |
| Technology | 1 |