| hardness |
The degree of resistance of a given mineral to scratching, indicating the strength of the bonds that hold the mineral's atoms together. The hardness of a mineral is measured by rubbing it with substances of known hardness.
출처: college.hmco.com/geology/resources/geologylink/glo...
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| hardness |
The quality of a man's erection.
출처: www.thehardnessfactor.com/exclusives/glossary.html
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| hardness |
Measure of a material's resistance to localized plastic deformation. Most hardness tests involve indentation, but hardness may be reported as resistance to scratching (file test), or rebound of a projectile bounced off the material (scleroscope hardness). Some common measures of indentation hardness are Brinell Hardness Number, Rockwell Hardness Number, ASTM Hardness Number, Diamond Pyramid Impact Test Hardness Number, Durometer Hardness, Knoop Hardness, and Pfund Hardness. ...
출처: unistates.com/rmt/explained/glossary/rmtglossarygh...
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| hardness |
A measure of the amount of calcium and magnesium salts in water. Usually expressed as grains per gallon or ppm as CaCO3.
출처: www.cleaver-brooks.com/GlossFP.html
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| hardness test |
Techniques used to measure the degree of hardness of heat-treated materials.
출처: www.ticms.com/wizard/glossary.htm
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