- bierbaum scratch hardness
- тпердость, определяемая царананием по Биербауму
English-Russian dictionary of chemistre. 2014.
English-Russian dictionary of chemistre. 2014.
Indentation hardness — tests are used to determine the hardness of a material to deformation. Several such tests exist, wherein the examined material is indented until an impression is formed; these tests can be performed on a macroscopic or microscopic scale. When… … Wikipedia