calcium hardness это:

calcium hardness
кальциевая жёсткость
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кальциевая жёсткость (воды)

Англо-русский строительный словарь. 2013.

Смотреть что такое "calcium hardness" в других словарях:

  • Calcium chloride — Calcium chloride …   Wikipedia

  • Calcium carbonate — Calcium carbonate …   Wikipedia

  • Hardness — Hard ness, n. [AS. heardness.] 1. The quality or state of being hard, literally or figuratively. [1913 Webster] The habit of authority also had given his manners some peremptory hardness. Sir W. Scott. [1913 Webster] 2. (Min.) The cohesion of the …   The Collaborative International Dictionary of English

  • hardness — water with a high mineral content, the name deriving from the fact that it is hard to develop a lather for cleaning. The concentration of calcium and magnesium ions in water is expressed as p.p.m. or mg/l of calcium carbonate equivalents. Soft… …   Dictionary of ichthyology

  • calcium — /kal see euhm/, n. Chem., Biol. a silver white divalent metal, occurring combined in limestone, chalk, gypsum, etc., occurring also in vertebrates and other animals, as a component of bone, skeletal mass, shell, etc., and as a necessary element… …   Universalium

  • Calcium hexaboride — Chembox new ImageFile = ImageSize = IUPACName = Calcium hexaboride OtherNames = Calcium boride Section1 = Chembox Identifiers CASNo = 12007 99 7 PubChem = SMILES = Section2 = Chembox Properties Formula = CaB6 MolarMass = 104.94 g/mol Appearance …   Wikipedia

  • 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 — 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 —    1. Property of water that prevents lathering because of the presence of cations, mainly calcium and magnesium, which form insoluble soaps [10].    2. The sum of calcium and magnesium ions expressed as the equivalent amount of calcium carbonate …   Lexicon of Cave and Karst Terminology

  • hardness — hard•ness [[t]ˈhɑrd nɪs[/t]] n. 1) the state or quality of being hard 2) chem. that quality in water that is imparted by the presence of dissolved salts, esp. calcium sulfate or bicarbonate 3) mir the comparative ability of a substance to scratch …   From formal English to slang


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