half-life

US 
UK 
  • n.半衰期；（放射性物质的）半衰期
  • Web半条命；战栗时空；半生期
Plural Form：half-lives  

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Web Definition

half-life
n.
1.
（放射性物质的）半衰期the time taken for the radioactivity of a substance to fall to half its original value
2.
半衰期the time taken for the concentration of a reactant to fall to half of its original value in a chemical reaction

Sample Sentence

Definition:
AllAll,半衰期半衰期,半条命半条命,战栗时空战栗时空,半生期半生期
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard
1.
But the half-life of market domination seems to be dwindling.
但是似乎这些公司的垄断半衰期一直在缩短。
dàn shì sì hū zhè xiē gōng sī de lǒng duàn bàn shuāi qī yì zhí zài suō duǎn 。
dongxi.net
2.
It accumulates in the cooling water of nuclear reactors and is often vented in small amounts to the environment. Its half-life is 12 years.
氚聚集在核反应堆的冷却水中，通常以微量排放到环境中，其半衰期为12年。
chuān jù jí zài hé fǎn yìng duī de lěng què shuǐ zhōng , tōng cháng yǐ wēi liàng pái fàng dào huán jìng zhōng , qí bàn shuāi qī wèi shí èr nián 。
article.yeeyan.org
3.
When Hazen's team put oil samples in a laboratory setup designed to mimic Gulf conditions, it had a half-life of between one and six days.
当黒曾团队将油样放入模拟的海湾背景下的实验室，油样有一个在一天和六天之间的半衰期。
dāng hēi céng tuán duì jiāng yóu yàng fàng rù mó nǐ de hǎi wān bèi jǐng xià de shí yàn shì , yóu yàng yǒu yī gè zài yī tiān hé liù tiān zhī jiān de bàn shuāi qī 。
www.suiniyi.com
4.
"Half-Life 2" , which came out in 2004, took six years to develop, whereas new episodes can be put together in a year or so.
2004年发行的《半条命2》花费了六年时间开发，而游戏的新章节仅需一年左右就可完工。
èr líng líng sì nián fā xíng de 《 bàn tiáo mìng èr 》 huā fèi le liù nián shí jiān kāi fā , ér yóu xì de xīn zhāng jié jǐn xū yī nián zuǒ yòu jiù kě wán gōng 。
www.ecocn.org
5.
In particular, the half-life of ethyl mercury is short (less than 1 week) compared with that of methyl mercury (1. 5 Months).
特别是乙基汞的半衰期较短（少于1周），而甲基汞的半衰期为1.5个月。
tè bié shì yǐ jī gǒng de bàn shuāi qī jiào duǎn ( shǎo yú yī zhōu ) , ér jiǎ jī gǒng de bàn shuāi qī wèi yī diǎn wǔ gè yuè 。
www.who.int
6.
Furthermore, the long half-life of the metabolites could cause their accumulation and induce apparent injuries of target organs.
而且，此代谢物的半衰期极长。故极易累积于体内造成标的器官明显的伤害。
ér qiě , cǐ dài xiè wù de bàn shuāi qī jí cháng 。 gù jí yì lěi jī yú tǐ nèi zào chéng biāo dì qì guān míng xiǎn de shāng hài 。
www.ceps.com.tw
7.
Iodine-131 has a half-life of about a week, meaning that levels in water could fall quickly if new doses aren't introduced.
碘-131的半衰期在一个星期左右，所以如果没有新的剂量进入，水中的放射性可能就会很快下降。
diǎn - yì bǎi sān shí yī de bàn shuāi qī zài yī gè xīng qī zuǒ yòu , suǒ yǐ rú guǒ méi yǒu xīn de jì liàng jìn rù , shuǐ zhōng de fàng shè xìng kě néng jiù huì hěn kuài xià jiàng 。
chinese.wsj.com
8.
Scientists estimate the half-life of CO2 might be close to a hundred years.
科学家估计，二氧化碳的半衰期可能接近于100年。
kē xué jiā gū jì , èr yǎng huà tàn de bàn shuāi qī kě néng jiē jìn yú yì bǎi nián 。
www.ftchinese.com
9.
Iodine-131 has a half-life of roughly a week, which means levels could fade if new radioactive material isn't added.
碘-131的半衰期约为一周，也就是说如果没有新的放射性物质加入，辐射水平有望降低。
diǎn - yì bǎi sān shí yī de bàn shuāi qī yuē wéi yī zhōu , yě jiù shì shuō rú guǒ méi yǒu xīn de fàng shè xìng wù zhì jiā rù , fú shè shuǐ píng yǒu wàng jiàng dī 。
c.wsj.com
10.
Such a short half-life to facilitate the treatment of the operation, but also easy to play a role in radioactive antibody.
如此短的半衰期便于治疗操作，也便于放射性抗体发挥作用。
rú cǐ duǎn de bàn shuāi qī biàn yú zhì liáo cāo zuò , yě biàn yú fàng shè xìng kàng tǐ fā huī zuò yòng 。
www.chinavalue.net
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