Meaning of 半衰期
半衰期 means half-life (physics); the time required for half of a radioactive substance to decay. Pronounced bàn shuāi qī.
- half-life (physics); the time required for half of a radioactive substance to decay
Definitions & Examples
Yóu铀
èr-
sān2
bā3
de8
bàn的
shuāi半
qī衰
cháng期
dá长
sì达
shí4
wǔ5
yì亿
nián年
。
Uranium-238 has a half-life of 4.5 billion years.
Tàn碳
shí-
sì1
de4
bàn的
shuāi半
qī衰
yuē期
wéi约
wǔ为
qiān5
qī7
bǎi3
sān0
shí年
,
nián常
cháng用
yòng于
yú考
kǎo古
gǔ测
cè年
。
Carbon-14 has a half-life of about 5,730 years and is commonly used for archaeological dating.
Duǎn短
bàn半
shuāi衰
qī期
de的
fàng放
shè射
xìng性
wù物
zhì质
shuāi衰
jiǎn减
de得
gèng更
kuài快
,
chǔ储
cún存
shí时
jiān间
xiāng相
duì对
jiào较
duǎn短
。
Radioactive materials with short half-lives decay faster and require shorter storage periods.
Kē科
xué学
jiā家
tōng通
guò过
cè测
liáng量
bàn半
shuāi衰
qī期
lái来
què确
dìng定
yán岩
shí石
hé和
huà化
shí石
de的
jué绝
duì对
nián年
líng龄
。
Scientists determine the absolute age of rocks and fossils by measuring half-lives.
Measure Words
个/ gè
Primary