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DefinitionФильтр
  
  
  
  
  
  
 
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quantity
property of a phenomenon, body, or substance, where the property has a magnitude that can be expressed as a number and a reference
EnglishJCGM/WG 2007 (Eng)quantity
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kind of quantity
aspect common to mutually comparable quantities
EnglishJCGM/WG 2007 (Eng)kind of quantity
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system of quantities
set of quantities together with a set of non-contradictory equations relating those quantities
EnglishJCGM/WG 2007 (Eng)system of quantities
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base quantity
quantity in a conventionally chosen subset of a given system of quantities, where no subset quantity can be expressed in terms of the others
EnglishJCGM/WG 2007 (Eng)base quantity
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derived quantity
quantity, in a system of quantities, defined in terms of  the base quantities of that system
EnglishJCGM/WG 2007 (Eng)derived quantity
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International System of Quantities
system of quantities based on the seven base quantities length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity
EnglishJCGM/WG 2007 (Eng)International System of Quantities
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quantity dimension
expression of the dependence of a quantity on the base quantities of a system of quantities as a product of powers of factors corresponding to the base quantities, omitting any numerical factor
EnglishJCGM/WG 2007 (Eng)quantity dimension
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quantity of dimension one
quantity for which all the exponents of the factors corresponding to the base quantities in its quantity dimension are zero
EnglishJCGM/WG 2007 (Eng)quantity of dimension one
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measurement unit
real scalar quantity, defined and adopted by convention, with which any other quantity of the same kind can be compared to express the ratio of the two quantities as a number
EnglishJCGM/WG 2007 (Eng)measurement unit
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base unit
measurement unit that is adopted by convention for a base quantity
EnglishJCGM/WG 2007 (Eng)base unit
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derived unit
measurement unit for a derived quantity
EnglishJCGM/WG 2007 (Eng)derived unit
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coherent derived unit
derived unit that, for a given system of quantities and for a chosen set of base units, is a product of powers of base units with no other proportionality factor than one
EnglishJCGM/WG 2007 (Eng)coherent derived unit
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system of units
set of base units and derived units, together with their multiples and submultiples, defined in accordance with given rules, for a given system of quantities
EnglishJCGM/WG 2007 (Eng)system of units
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coherent system of units
system of units, based on a given system of quantities, in which the measurement unit for each derived quantity is a coherent derived unit
EnglishJCGM/WG 2007 (Eng)coherent system of units
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off-system measurement unit
measurement unit that does not belong to a given system of units
EnglishJCGM/WG 2007 (Eng)off-system measurement unit
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International System of Units
system of units based on the International System of Quantities, their names and symbols,  including a series of prefixes and their names and symbols, together with rules for their use, adopted by the General Conference on Weights and Measures (CGPM)
EnglishJCGM/WG 2007 (Eng)International System of Units
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multiple of a unit
measurement unit obtained by multiplying a given measurement unit by an integer greater than one
EnglishJCGM/WG 2007 (Eng)multiple of a unit
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submultiple of a unit
measurement unit obtained by dividing a given measurement unit by an integer greater than one
EnglishJCGM/WG 2007 (Eng)submultiple of a unit
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quantity valuem
number and reference together expressing magnitude of a quantity
EnglishJCGM/WG 2007 (Eng)quantity valuem
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numerical quantity value
number in the expression of a quantity value, other than any number serving as the reference
EnglishJCGM/WG 2007 (Eng)numerical quantity value
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quantity calculus
set of mathematical rules and operations applied to quantities other than ordinal quantities
EnglishJCGM/WG 2007 (Eng)quantity calculus
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quantity equation
mathematical relation between quantities in a given system of quantities, independent of measurement units
EnglishJCGM/WG 2007 (Eng)quantity equation
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unit equation
mathematical relation between base units, coherent derived units or other measurement units
EnglishJCGM/WG 2007 (Eng)unit equation
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conversion factor between units
ratio of two measurement units for quantities of the same kind
EnglishJCGM/WG 2007 (Eng)conversion factor between units
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numerical value equation
mathematical relation between numerical quantity values, based on a given quantity equation and specified measurement units
EnglishJCGM/WG 2007 (Eng)numerical value equation
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ordinal quantity
quantity, defined by a conventional measurement procedure, for which a total ordering relation can be established, according to magnitude, with other quantities of the same kind, but for which no algebraic operations among those quantities exis
EnglishJCGM/WG 2007 (Eng)ordinal quantity
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quantity-value scale
ordered set of quantity values of quantities of a given kind of quantity used in ranking, according to magnitude, quantities of  that kind
EnglishJCGM/WG 2007 (Eng)quantity-value scale
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ordinal quantity-value scale
quantity-value scale for ordinal quantities
EnglishJCGM/WG 2007 (Eng)ordinal quantity-value scale
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conventional reference scale
quantity-value scale defined by formal agreement
EnglishJCGM/WG 2007 (Eng)conventional reference scale
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nominal property
property of a phenomenon , body, or substance, where the property has no magnitude
EnglishJCGM/WG 2007 (Eng)nominal property
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