| hardening |
Subjecting a seedling or plant to cooler temperatures in order to increase its resistance to more extreme cold.
출처: www.sustainableag.net/glossary_e-i.htm
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| hard water |
Water that contains certain salts, such as those of calcium or magnesium, which form insoluble deposits in boilers and form precipitates with soap.
출처: www.corrosionsource.com/handbook/glossary/h_glos.h...
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| hardness |
The ability of water to neutralize soap, due to the presence of cations such as calcium and magnesium; usually expressed as parts per million equivalents of calcium carbonate. Refers to the calcium and magnesium ion concentration in water on a scale of very soft (0-20 ppm as CaCO 3 ), soft (20-50 ppm), hard (50-500 ppm) and very hard (55+ ppm).
출처: ag.ansc.purdue.edu/courses/aq448/glossary.htm
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| hardening |
An emulsion can be hardened by the addition of alum, especially to the fixing bath. A hardening fixing agent makes reducing and toning a film more difficult.
출처: www2.uiah.fi/~teofilus/gravyyri/glossary.html
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| hardness |
A general term that correlates with strength, rigidity, and resistance to abrasion or penetration. Measured on Shore or Rockwell scales.
출처: www.icorally.com/glossary_convtables/glossary.html
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