Meaning of 无用功
无用功 means lost work; useless work; work done by a machine to overcome additional resistance. Pronounced wú yòng gōng.
- lost work; useless work; work done by a machine to overcome additional resistance
Definitions & Examples
Qǐ起
zhòng重
jī机
zài在
tí提
shēng升
zhòng重
wù物
shí时
，
chú除
le了
zuò做
yǒu有
yòng用
gōng功
wài外
，
hái还
yào要
kè克
fú服
zì自
shēn身
mó摩
cā擦
hé和
bì臂
zhòng重
zuò做
wú无
yòng用
gōng功
。
When a crane lifts heavy loads, besides doing useful work, it must also do lost work to overcome its own friction and the weight of the boom.
Jī机
xiè械
xiào效
lǜ率
děng等
yú于
yǒu有
yòng用
gōng功
yǔ与
zǒng总
gōng功
de的
bǐ比
zhí值
，
jiǎn减
shǎo少
wú无
yòng用
gōng功
kě可
yǐ以
tí提
gāo高
xiào效
lǜ率
。
Mechanical efficiency equals the ratio of useful work to total work; reducing lost work can improve efficiency.
Shǐ使
yòng用
rùn润
huá滑
yóu油
kě可
yǐ以
jiǎn减
xiǎo小
mó摩
cā擦
，
cóng从
ér而
jiàng降
dī低
wú无
yòng用
gōng功
de的
sǔn损
hào耗
。
Using lubricating oil can reduce friction, thereby decreasing the loss of useless work.
Relations
Antonyms