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KB Term:
CompositeUnitOfMeasure
Sigma KEE - CompositeUnitOfMeasure
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CompositeUnitOfMeasure
这是由其他单位的复合函数所决定的 UnitsOfMeasure
Class
的实例,当中的每一个可以是一个
CompositeUnitOfMeasure
或是一个
NonCompositeUnitOfMeasure
。
Relationships
Parents
函数量
A
FunctionQuantity
is a
PhysicalQuantity
that is returned by a
Function
that maps from one or more instances of
ConstantQuantity
to another instance of
ConstantQuantity
. For example, the velocity of a particle would be represented by a
FunctionQuantity
relating values of time (which are instances of
ConstantQuantity
) to values of distance (also instances of
ConstantQuantity
). Note that all elements of the range of the
Function
corresponding to a
FunctionQuantity
have the same physical dimension as the
FunctionQuantity
itself.
测量单位
A standard of measurement for some dimension. For example, the
Meter
is a
UnitOfMeasure
for the dimension of length, as is the
Inch
. There is no intrinsic property of a
UnitOfMeasure
that makes it primitive or fundamental, rather, a system of units (e.g.
SystemeInternationalUnit
) defines a set of orthogonal dimensions and assigns units for each.
Children
UnitOfArea
Every instance of this
Class
is a
UnitOfMeasure
that can be used with
MeasureFn
to form instances of
AreaMeasure
.
UnitOfAtmosphericPressure
UnitOfAtmosphericPressure
includes those instances of
UnitOfMeasure
used to measure atmospheric pressure (
barometricPressure
), e.g.,
InchMercury
.
UnitOfFrequency
Every instance of this
Class
is a
UnitOfMeasure
that can be used with
MeasureFn
to form instances of
FrequencyMeasure
.
UnitOfVolume
Every instance of this
Class
is a
UnitOfMeasure
that can be used with
MeasureFn
to form instances of
VolumeMeasure
.
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