半衰期英语怎么说
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本文为您带来半衰期的英文翻译,包括半衰期用英语怎么说,半衰期用英语怎么说,半衰期的英语造句,半衰期的英文原声例句,半衰期的相关英语短语等内容。
半衰期的英文翻译,半衰期的英语怎么说?
n.half-time
misc.half-life period ; half-value period ; radioactive half-life
半衰期的英语网络释义
阿奇霉素和红霉素儿科临床应用的比较--(技术交流) 关键词:阿奇霉素;红霉素;抗菌作用;半衰期;肝损伤 [gap=546]Key words:azithromycin; erythromycin; antibacterial action; half life; hepatic injury
... d t [ I ] [ I ] 0 e t d k - 公式 说明 43 3.2 自由基聚合机理 3.2 自由基聚合机理 高分子化学 (2)半衰期(half life period) 指引发剂分解至起始浓度一半所需时间,以t 1/2 表示,单位 通常为h -1 。对一级反应,常用半衰期来衡量反应速率大小。
... half life 半衰期 half period 半衰期,半周期 half plate paper 半光平张纸 ...
氟虫腈农药在土壤中的降解规律研究 关键词:氟虫腈;降解;土壤;代谢产物;半衰期[gap=1125]Key words: fipronil; degradation; soil; metabolites; half-time.
半衰期的汉英大词典
半衰期
- {物} half-life period; half-time; half-value period; {核} radioactive half-life
半衰期的英语短语
有效半衰期[特医]effective half-life;effective halt;Teff;effective half-life period
被引半衰期Cited Half-life;quoted article half-life
放射性半衰期[核]radioactive half-life;life
引用半衰期Cited Half-life;Citing Half;life
生物半衰期[特医]biological half-life;biological half life period;biologic half life
停留半衰期residence half-time
生物学半衰期biological half life period;biological half time;B
代谢半衰期metabolic half-life
泡沫半衰期half foam life period;froth half life
半衰期的英文例句
商业机会有半衰期,就像铀一样。
Business opportunities have a half-life, just like uranium.
然而,如果半衰期增加,情况会改变。
However, if the half-life is increased, the situation changes.
这种放射性元素半衰期约为5700年。
This radioactive element has a half-life of some 5, 700 years.
在英国,官方反对使用核能的半衰期很短。
THE half-life of official opposition to nuclear power in Britain has been very short.
半衰期实际上是,一半反应物消失的时间。
So, the half-life is just the time that it takes for half of the reactants to disappear.
放射性碘的半衰期为八天,几周内自然衰变。
Radioactive iodine has a half-life of eight days and decays naturally within weeks.
现在我们看看,这个一阶反应的半衰期。
Now, we also can usefully look at the half life, in this case, in the case of first order kinetics.
碘-131的半衰期为8天,对人身健康危害相当大。
Iodine-131 has a half-life of eight days and is quite dangerous to human health.
碘131有八天的半衰期,这意味着每八天其能量就下降一半。
Iodine 131 has a half-life of eight days, meaning that every eight days it loses half its strength.
而更危险的甲基汞(可损伤神经)的半衰期是44天。
The more dangerous methyl mercury, known to damage nerves, has a half-life of 44 days.
在一个宇宙中,原子在第一个半衰期中衰变了,于是你有了一只前猫。
So in one universe, the atom decays within the first half-life, and you have an ex-cat. Or ex-qat.
铀,碘,铯等元素在一定的半衰期内都可以释放出上述射线。
These rays are emitted during the decay of certain versions of uranium, iodine, cesium and other elements.
长期以来,对人体健康的一大威胁就是铯137,它的半衰期为三十年。
Over the long term, the big threat to human health is cesium-137, which has a half-life of 30 years.
很多情况下有必要,定义一个称为半衰期的量,这个量很有用。
In lots of cases, it's useful to define what's called a half life. It's just useful.
光衰小(其亮度半衰期)2000个小时老化测试光衰小于2%。
Light failure small (its brightness half-life) 2000 hours ageing test light failure is less than 2%.
服用稳定的碘元素会阻止危险碘同位素的摄入,碘同位素的半衰期仅为八天。
Taking stable iodine as a pill blocks the uptake of the hazardous radioisotope, which has a half-life of 8 days.
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。
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.
这里所指的半衰期是现存原子的一半发生衰变或爆炸所消耗的时间。
By that is meant the time which elapses before half of the existing atoms have disintegrated or exploded.
但碘- 131则不同,它的半衰期是八天,意味着它需要数月时间才会完全消失。
However, iodine-131 has a short half-life of eight days, which means it will decay away completely in the environment in a matter of months.
氮16的危险只针对于核电站工人和机器操作者而存在,因为它的半衰期只有七秒钟。
The danger of nitrogen-16 is an issue only for plant workers and operators because its half-life is only seven seconds.
而且钚元素的半衰期非常长,因此危险性的发射影响将会持续成千上万年。
Plutonium also breaks down very slowly, so it remains dangerously radioactive for hundreds of thousands of years.
更妙的是,显然人们可以用放射性作为时钟,用衰变系列的半衰期计算出岩石的年龄。
Better still, it became apparent to him that one could use radioactivity as a clock, with the half-life of a decay series enabling us to calculate the age of a rock.
要知道,核废料的半衰期是100000年——而英 国的巨石阵仅有四千年的历史。
It is often said that nuclear waste has a half-life of 100, 000 years…it is worth remembering that Stonehenge was built only 4, 000 years ago.
与放射性一样,故事有一个半衰期-换言之,就是新推荐的故事从首页到被下放的周期。
As with radioactivity, stories have a half-life-in other words a period by which half of newly promoted stories are relegated to a nether page.
不是,对“水合三氯乙醛”有较高耐药能力的人,它的半衰期仅为4个小时。
No, Chloral Hydrate has a half-life of only 4 hours in people with a high tolerance.
这座城市面临的最大问题就是处理铯—137,这是一种半衰期为30年的放射性同位素。
The city's challenge, chiefly, is to dispose of cesium-137, a radioactive isotope with a half-life of 30 years.
这座城市面临的最大问题就是处理铯—137,这是一种半衰期为30年的放射性同位素。
The city's challenge, chiefly, is to dispose of cesium-137, a radioactive isotope with a half-life of 30 years.
半衰期的原声例句
半衰期的网络释义
半衰期 放射性元素的原子核有半数发生衰变时所需要的时间,叫半衰期(Half-life)。随着放射的不断进行,放射强度将按指数曲线下降,放射性强度达到原值一半所需要的时间叫做同位素的半衰期。原子核的衰变规律是:N=No*(1/2)^(t/T) 其中:No是指初始时刻(t=0)时的原子核数 t为衰变时间,T为半衰期,N是衰变后留下的原子核数。放射性元素的半衰期长短差别很大,短的远小于一秒,长的可达数百亿年。 在物理学中,尤其是高中物理,半衰期并不能指少数原子,它的定义为:放射性元素的原子核有半数发生衰变所需的时间。衰变是微观世界里的原子核的行为,而微观世界规律的特征之一在于“单个的微观事件是无法预测的”,即对于一个特定的原子,我们只知道它发生衰变的概率,而不知道它将何时发生衰变。然而。量子理论可以对大量原子核的行为做出统计预测。而放射性元素的半衰期,描述的就是这样的统计规律。 放射性元素衰变的快慢是由原子核内部自身决定的,与外界的物理和化学状态无关。
以上关于半衰期的英语翻译来自英汉大词典,希望对您学习半衰期的英语有帮助。