Variable 音标拼音: [v'ɛriəbəl]
n . 变量,可变物
a . 易变的;可变的;变量的;变异的
变量,可变物易变的;可变的;变量的;变异的
variable 事件虚拟变数
variable 变数
variable 变数
variable adj 1 :
liable to or capable of change ; "
rainfall in the tropics is notoriously variable "; "
variable winds "; "
variable expenses " [
ant : {
invariable }]
2 :
marked by diversity or difference ; "
the varying angles of roof slope "; "
nature is infinitely variable " [
synonym : {
varying },
{
variable }]
3 : (
used of a device )
designed so that a property (
as e .
g .
light )
can be varied ; "
a variable capacitor "; "
variable filters in front of the mercury xenon lights "
n 1 :
something that is likely to vary ;
something that is subject to variation ; "
the weather is one variable to be considered "
2 :
a quantity that can assume any of a set of values [
synonym :
{
variable }, {
variable quantity }]
3 :
a star that varies noticeably in brightness [
synonym : {
variable star }, {
variable }]
4 :
a symbol (
like x or y )
that is used in mathematical or logical expressions to represent a variable quantity Variable \
Va "
ri *
a *
ble \,
a . [
L .
variabilis :
cf .
F .
variable .]
1 .
Having the capacity of varying or changing ;
capable of alternation in any manner ;
changeable ;
as ,
variable winds or seasons ;
a variable quantity .
[
1913 Webster ]
2 .
Liable to vary ;
too susceptible of change ;
mutable ;
fickle ;
unsteady ;
inconstant ;
as ,
the affections of men are variable ;
passions are variable .
[
1913 Webster ]
Lest that thy love prove likewise variable . --
Shak .
[
1913 Webster ]
His heart ,
I know ,
how variable and vain ! --
Milton .
[
1913 Webster ]
{
Variable exhaust } (
Steam Eng .),
a blast pipe with an adjustable opening .
{
Variable quantity } (
Math .),
a variable .
{
Variable -
rate mortgage } (
Finance ),
a mortgage whose percentage interest rate varies depending on some agreed standard ,
such as the prime rate ; --
used often in financing the purchase of a home .
Such a mortgage usually has a lower initial interest rate than a {
fixed -
rate mortgage },
and this permits buyers of a home to finance the purchase a house of higher price than would be possible with a fixed -
rate loan .
{
Variable stars } (
Astron .),
fixed stars which vary in their brightness ,
usually in more or less uniform periods .
[
1913 Webster ]
Syn :
Changeable ;
mutable ;
fickle ;
wavering ;
unsteady ;
versatile ;
inconstant .
[
1913 Webster ]
Variable \
Va "
ri *
a *
ble \,
n .
1 .
That which is variable ;
that which varies ,
or is subject to change .
[
1913 Webster ]
2 . (
Math .)
A quantity which may increase or decrease ;
a quantity which admits of an infinite number of values in the same expression ;
a variable quantity ;
as ,
in the equation x ^{
2 } -
y ^{
2 } =
R ^{
2 },
x and y are variables .
[
1913 Webster ]
3 . (
Naut .)
(
a )
A shifting wind ,
or one that varies in force .
(
b )
pl .
Those parts of the sea where a steady wind is not expected ,
especially the parts between the trade -
wind belts .
[
1913 Webster ]
{
Independent variable } (
Math .),
that one of two or more variables ,
connected with each other in any way whatever ,
to which changes are supposed to be given at will .
Thus ,
in the equation x ^{
2 } -
y ^{
2 } =
R ^{
2 },
if arbitrary changes are supposed to be given to x ,
then x is the independent variable ,
and y is called a function of x .
There may be two or more independent variables in an equation or problem .
Cf . {
Dependent variable },
under {
Dependent }.
[
1913 Webster ]
181 Moby Thesaurus words for "
variable ":
able to adapt ,
adaptable ,
adjustable ,
adrift ,
afloat ,
agnostic ,
alterable ,
alterative ,
alternating ,
ambiguous ,
amorphous ,
broken ,
capricious ,
careening ,
catchy ,
chancy ,
changeable ,
changeful ,
changing ,
checkered ,
choppy ,
desultory ,
deviable ,
deviating ,
deviative ,
deviatory ,
dicey ,
different ,
disconnected ,
discontinuous ,
disorderly ,
divaricate ,
divergent ,
diversified ,
diversiform ,
dizzy ,
doubting ,
eccentric ,
equivocal ,
erose ,
erratic ,
ever -
changing ,
fast and loose ,
fickle ,
fitful ,
flexible ,
flickering ,
flighty ,
flitting ,
fluctuating ,
fluid ,
freakish ,
giddy ,
guttering ,
halting ,
herky -
jerky ,
hesitant ,
hesitating ,
heteroclite ,
immethodical ,
impermanent ,
impetuous ,
impulsive ,
incalculable ,
inconsistent ,
inconstant ,
indecisive ,
indemonstrable ,
infirm ,
intermittent ,
intermitting ,
irregular ,
irresolute ,
irresponsible ,
jagged ,
jerky ,
kaleidoscopic ,
lurching ,
malleable ,
many -
sided ,
mazy ,
mercurial ,
metamorphic ,
mobile ,
modifiable ,
moody ,
motley ,
movable ,
mutable ,
nonconformist ,
nonstandard ,
nonuniform ,
patchy ,
permutable ,
plastic ,
pluralistic ,
polysemous ,
protean ,
proteiform ,
ragged ,
rambling ,
resilient ,
restless ,
rough ,
roving ,
rubbery ,
scatterbrained ,
scrappy ,
shapeless ,
shifting ,
shifty ,
shuffling ,
skeptical ,
slippery ,
snatchy ,
spasmatic ,
spasmic ,
spasmodic ,
spastic ,
spineless ,
sporadic ,
spotty ,
staggering ,
supple ,
temperamental ,
ticklish ,
touch -
and -
go ,
transient ,
transitory ,
uncertain ,
unconfirmable ,
uncontrolled ,
unconvinced ,
undependable ,
undisciplined ,
undivinable ,
unequable ,
unequal ,
uneven ,
unfixed ,
unforeseeable ,
unmethodical ,
unmetrical ,
unorthodox ,
unpersuaded ,
unpredictable ,
unprovable ,
unregular ,
unreliable ,
unrestrained ,
unrhythmical ,
unsettled ,
unstable ,
unstable as water ,
unstaid ,
unsteadfast ,
unsteady ,
unsure ,
unsystematic ,
ununiform ,
unverifiable ,
vacillating ,
vagrant ,
variegated ,
variform ,
various ,
varying ,
veering ,
vicissitudinary ,
vicissitudinous ,
volatile ,
wandering ,
wanton ,
wavering ,
wavery ,
wavy ,
wayward ,
whimsical ,
wishy -
washy ,
wobbling ,
wobbly (Sometimes "var " /veir / or /var /) A named memory
location in which a program can store intermediate results and
from which it can read it them . Each {programming language }
has different rules about how variables can be named , typed ,
and used . Typically , a value is "assigned " to a variable in
an {assignment } statement . The value is obtained by
evaluating an expression and then stored in the variable . For
example , the assignment
x = y 1
means "add one to y and store the result in x ". This may look
like a mathematical equation but the mathematical equality is
only true in the program until the value of x or y changes .
Furthermore , statements like
x = x 1
are common . This means "add one to x ", which only makes sense
as a state changing operation , not as a mathematical equality .
The simplest form of variable corresponds to a single -{word }
of {memory } or a {CPU } {register } and an assignment to a
load } or {store } {machine code } operation .
A variable is usually defined to have a {type }, which never
changes , and which defines the set of values the variable can
hold . A type may specify a single ("atomic ") value or a
collection ("aggregate ") of values of the same or different
types . A common aggregate type is the {array } - a set of
values , one of which can be selected by supplying a numerical
index }.
Languages may be {untyped }, {weakly typed }, {strongly typed },
or some combination . {Object -oriented programming } languages
extend this to {object } types or {classes }.
A variable 's {scope } is the region of the program source
within which it represents a certain thing . Scoping rules are
also highly language dependent but most serious languages
support both {local variables } and {global variables }.
Subroutine } and {function } {formal arguments } are special
variables which are set automatically by the language runtime
on entry to the subroutine .
In a {functional programming } language , a variable 's value
never changes and change of state is handled as recursion over
lists of values .
2004 -11 -16 )
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about_PSItem - PowerShell | Microsoft Learn about_Automatic_Variables - PowerShell | Microsoft Learn about_Variables - PowerShell | Microsoft Learn Predefined variables - Azure Pipelines | Microsoft Learn Variable data types - Power Automate | Microsoft Learn New-Variable (Microsoft. PowerShell. Utility) - PowerShell cmd | Microsoft Learn about_Environment_Variables - PowerShell | Microsoft Learn Work with variables - Microsoft Copilot Studio Visual Studio 2026 Release Notes | Microsoft Learn