| |||
| fretting | |||
| dabbing; friction; rubbing | |||
| scuffing | |||
|
frotamiento : 42 phrases in 12 subjects |
| Chemistry | 2 |
| Electric traction | 4 |
| Electronics | 2 |
| Industry | 1 |
| Measuring instruments | 1 |
| Mechanics | 1 |
| Medical | 3 |
| Nuclear physics | 1 |
| Statistics | 4 |
| Technology | 10 |
| Textile industry | 6 |
| Transport | 7 |