et

eritihedus

1 substantive

Terminological databases

EKI terminibaas Esterm

ID 728628 Last modified 08.02.2011
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Domain physical chemistrygeneral aspects of the subject fieldPhysics
suhteline näivtihedus preferred
eritihedus deprecated
suhteline näivtihedus preferred
eritihedus deprecated

Materjalitehnika terminibaas

ID 675650 Last modified 26.07.2025
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Domain Physicspowder metallurgyceramic technology
suhteline tihedus preferred
eritihedus
erikaal deprecated
relative density preferred
относительная плотность
относительная плотность по воде
относительный вес
относительный удельный вес
специфическая плотность
удельная масса variant
удельная плотность
  • etteantud mahuga aine massi suhe sama mahuga vee massi temperatuuril 4 oC (vrd tihedustegur)
  • the ratio of the mass of given volume of a substance to the mass of an equal volume of water at temperature 4 oC (compare: density ratio)
  • отношение массы данного объёма вещества к массе равного объёма воды при температуре 4 °C (ср. коэффициент плотности)
suhteline tihedus preferred
eritihedus
erikaal deprecated
relative density preferred
specific gravity
относительная плотность
относительная плотность по воде
относительный вес
относительный удельный вес
специфическая плотность
удельная масса variant
удельная плотность
удельный вес

Metroloogia terminibaas

ID 637498 Last modified 01.10.2026
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Domain Standardisation - Metrology
suhteline tihedus preferred
eritihedus former
relative density preferred
RD, r.d.
  • aine tiheduse (ruumalaühiku massi) ja antud tugimaterjali tiheduse suhe
  • antud aine etteantud mahu massi suhe sama mahuga vee massi
  • ratio of the density (mass of a unit volume) of a substance to the density of a given reference material
suhteline tihedus preferred
Usage examples
  • Suhteline tihedus on üksühikuga suurus, mis on määratletud aine tiheduse ja võrdlusaine tiheduse suhtena. Tänapäeval on suhteline tihedus (lühendid RD või r.d.) eelisterminiks ja seda kasutavad nt ISO, IUPAC ja NIST.
Good to know
  • Vedelike suhtelist tihedust mõõdetakse peaaegu alati kõige tihedama vee suhtes (4 °C juures) ja gaaside puhul on võrdlusaluseks õhk toatemperatuuril (20 °C).
eritihedus former
relative density preferred
Usage examples
  • The relative density, also called specific gravity, is a quantity with unit one defined as the ratio of the density of a substance to the density of a given reference material. The term "relative density" (abbreviated RD or r.d.) is preferred modern use, for example in ISO, IUPAC, and NIST.
Good to know
  • Relative density for liquids is nearly always measured with respect to water at its densest (at 4 °C), and for gases, the reference is air at room temperature (20 °C).
RD, r.d. abbreviation
specific gravity former

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