- relative hardness
- 相对硬度
English-Chinese dictionary of mechanical engineering (英汉机械工程大词典). 2013.
relative hardness
Look at other dictionaries:
hardness number — a number indicative of the degree of relative hardness of materials. See Brinell, Knoop, Rockwell, and Vickers hardness n … Medical dictionary
hardness — [härd′nis] n. 1. the state or quality of being hard (in various senses) 2. the relative capacity of a substance for scratching another or for being scratched or indented by another … English World dictionary
hardness — /hahrd nis/, n. 1. the state or quality of being hard: the hardness of ice. 2. a relative degree or extent of this quality: wood of a desirable hardness. 3. that quality in water that is imparted by the presence of dissolved salts, esp. calcium… … Universalium
hardness tester — ▪ device device that indicates the hardness of a material, usually by measuring the effect on its surface of a localized penetration by a standardized rounded or pointed indenter of diamond, carbide, or hard steel. Brinell hardness is … Universalium
hardness — 1. The degree of firmness of a solid, as determined by its resistance to deformation, scratching, or abrasion. SEE ALSO: h. scale, number. 2. The relative penetrating power of a beam of x rays, used both within the diagnostic range of … Medical dictionary
hardness — noun 1. the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale • Ant: ↑softness • Derivationally related forms: ↑hard • Hypernyms: ↑consistency, ↑consistence, ↑eubstance, ↑ … Useful english dictionary
hardness — Synonyms and related words: Philistinism, abstruseness, arduousness, armor, asperity, astringency, austerity, bothersomeness, burdensomeness, callosity, callousness, callus, closeness, cohesiveness, coldbloodedness, coldheartedness, coldness,… … Moby Thesaurus
Rockwell hardness number — a number indicative of the degree of relative hardness of materials, determined by measuring the depth of the impression made by a steel or diamond penetrator pressed into the surface of the material being tested. There are a number of Rockwell… … Medical dictionary
Knoop hardness number — See under number. * * * a number indicative of the degree of relative hardness of a material, calculated from the load employed and the length of the long axis of the impression made by the rhomboidal pyramid of a diamond pressed into the surface … Medical dictionary
Vickers hardness number — a number indicative of the degree of relative hardness of materials, determined by measuring the long diagonals of indentation made by pressing the pyramidal point of a diamond into the surface of the material being tested; equal to the load in… … Medical dictionary
Bri|nell hardness — «brih NEHL», the relative hardness of a metal, determined by pressing a steel ball under a given pressure into the substance under test. ╂[< J. A. Brinell, 1849 1925, Swedish engineer, who devised the test for it] … Useful english dictionary
