英语单词 红联
红联英语单词
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half-life

half-life什么意思,half-life翻译

基本解释

n.: 半衰期;(放射性物质的)半衰期
网络: 半条命;战栗时空;半生期

权威解释

  • (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

  • 半衰期:

    the time taken for the concentration of a reactant to fall to half of its original value in a chemical reaction

英汉解释

  • 【原子能】半衰期

  • 半寿期

词性分析

  • 复数:half-lives

例句

  • 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。

  • 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。

  • 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。

  • "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。

  • 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。

  • 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。

  • 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。

  • 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。

  • 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。

  • Half-life is the time required for half the quantity of the protein to be broken down and eliminated from the joint space.

    半衰期指一半蛋白从关节腔中分解和消失用的时间。

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