Hardness jelentése magyarul, definíció, kiejtés és példamondatok

hardness

amerikai:

brit:

Főnév

1. The quality of being hard.

2. An instance of this quality; hardship.

3. The quantity of calcium carbonate dissolved in water, usually expressed in parts per million (ppm).

4. The resistance to scratching, cutting, indentation or abrasion of a metal or other solid material.

5. The penetrating ability of electromagnetic radiation, such as x-rays; generally, the shorter the wavelength, the harder and more penetrating the radiation.

6. The measure of resistance to damage of a facility, equipment, installation, or telecommunications infrastructure when subjected to attack.