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請輸入英文單字,中文詞皆可:
joule 音標拼音: [dʒ'ul]
XDict
n
. 焦耳
PyDict
焦耳
WordNet
(
r
)
3
.
0
(
2006
) (
WordNet
)
joule
n
1
:
a
unit
of
electrical
energy
equal
to
the
work
done
when
a
current
of
one
ampere
passes
through
a
resistance
of
one
ohm
for
one
second
[
synonym
: {
joule
}, {
J
}, {
watt
second
}]
2
:
English
physicist
who
established
the
mechanical
theory
of
heat
and
discovered
the
first
law
of
thermodynamics
(
1818
-
1889
) [
synonym
: {
Joule
}, {
James
Prescott
Joule
}]
The
Collaborative
International
Dictionary
of
English
v
.
0
.
48
(
gcide
)
joule
\
joule
\ (
j
[=
oo
]
l
),
n
. [
From
the
distinguished
English
physicist
,
James
Prescott
Joule
(
1818
-
1889
).] (
Physics
.)
A
unit
of
work
which
is
equal
to
10
^{
7
}
ergs
(
the
unit
of
work
in
the
C
.
G
.
S
.
system
of
units
),
and
is
equivalent
to
one
watt
-
second
,
the
energy
expended
in
one
second
by
an
electric
current
of
one
ampere
in
a
resistance
of
one
ohm
;
also
called
the
{
absolute
joule
}.
It
is
abbreviated
J
or
j
.
The
{
international
joule
}
is
slightly
larger
,
being
1
.
000167
times
the
absolute
joule
.
The
absolute
joule
is
approximately
equal
to
0
.
737562
foot
pounds
,
0
.
239006
gram
-
calories
(
small
calories
),
and
3
.
72506
x
10
^{-
7
}
horsepower
-
hours
,
and
0
.
000948451
B
.
t
.
u
. --
HCP61
[
1913
Webster
PJC
]
{
Joule
'
s
equivalent
}.
See
under
{
Equivalent
},
n
.
[
1913
Webster
]
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