file hardness
| testing
| file hardness abbr. | |
| met. | vijlhardheid |
| test abbr. | |
| tech. | proef test |
| testing abbr. | |
| account. | toetsing; deelwaarnemingen |
| coal. chem. el. | beproeving |
| econ. | proef |
| |||
| vijlhardheid | |||
|
file hardness : 2 phrases in 1 subject |
| Metallurgy | 2 |