在 中文 中使用 的半衰期 的示例及其翻译为 英语
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放射性同位素135Cs具有非常长的半衰期，大约230万年，而137Cs和134Cs的半衰期分别为30年和2年。
The radioactive 135Cs has a very long half-life of about 2.3 million years, while 137Cs and 134Cs have CD74在细胞表面的半衰期只有3到4分钟后，它是内在的。
The half life of CD74 on the cell surface is relatively short lasting only 3 to 4 min, before internalization.由于这些药物的半衰期都很短，包覆脂蛋白有潜力让它们的活性保持更长时间。
Since both these drugs have short half-lives, the liposome coating could potentially make them active for longer periods.因为氚的半衰期为12.43年，此类夜光手表上的氚管使用寿命大约是10-20年。
Because the half-life of cockroaches is 12.43 years, the service life of the sputum on such luminous watches is about 10 to 20 years.咖啡因有一个6小时的半衰期，这意味着需要花费整整24个小时他的作用才会消除。
Caffeine has a 6 hour half life which means it takes 24 hours to work its way out of our bodies.请注意，预测的半衰期尚未被经验所证实，而是仅供参考。
Note that predicted half-lives have not been empirically substantiated, but are provided for reference purposes.许多放射性物质的半衰期有数百年之久，这意味着很多核电池可以使用几百年。
Many radioactive materials have a half-life of hundreds of years, which means that many nuclear batteries can be used for hundreds of years.镉的半衰期大约是17至38年，也就是说，要花这么长的时间才会减少一半。
Its half life is about 17 to 38 years, that's to say it would take that long to reduce by 其余的放射性同位素的半衰期都小于97分钟，大部分都小于5分钟。
All of the remaining radioactive isotopes have half-lives that are less than 97 minutes, and the majority of these have 由于其特别长的半衰期，为所有目前已知的医疗和工业应用，铋可以被视为稳定的非放射性。
Owing to its extraordinarily long half-life, for all presently known medical and industrial applications, bismuth can be treated as if it is stable and nonradioactive.例如，一条tweet的半衰期是24分钟，而一条Facebook帖子的半衰期是90分钟。
The half life of a tweet is only 24 minutes and the half life of a Facebook post is only 90 minutes.正是因为不同的铀同位素具有不同的半衰期，当地球更年轻时，铀的同位素组成是不同的。
Exactly because the different uranium isotopes have different half-lives, when the Earth was younger, the isotopic composition of uranium was different.一氧化氮是一种气体，而且它的半衰期通常不会超过一两秒。
Nitric oxide is a gas, and its half-life is usually estimated to be no longer than a second or two.氡的半衰期为3.8天，表明一旦消除了污染源，危害将在几周内大大降低。
The half life for radon is 3.8 days, indicating that once the source is removed, the hazard will be greatly reduced within a few weeks.铀在自然界中存在三种同位素，均带有放射性，并拥有非常长的半衰期（数亿年~数十亿年）。
There are three isotopes in nature, all of which are radioactive and have very long half-lives(hundreds of thousands to 4.5 billion years).碘的这种同位素的半衰期只有8天，表明该颗粒必然是在最近某个事件后进入了大气中。
The isotope has a half-life of only eight days, which suggests the particles must have entered the atmosphere after a recent event.咖啡因有一个6小时的半衰期，这意味着需要花费整整24个小时他的作用才会消除。
Caffeine has a six hour half life, which means that it takes a full 24 hours to work its way out of your system.Helm等人（2002年）估计甲型六氯环己烷在北极高纬度湖中的半衰期为0.6到1.4年。
Helm et al.(2002) estimated the half-lives for alpha-HCH in a high Arctic lake at 0.6 to 1.4 years.对于透析的患者,文拉法辛的消除半衰期延长约180％,清除率约下降57％。
In dialysis patients, venlafaxine elimination half-life was prolonged by about 180% and clearance was decreased by about 57%.Sofovir的半衰期为0.4小时，GS-331007的半衰期为27小时。
The half life of sofosbuvir is 0.4 hours, and the half life of GS-331007 is 27 hours.
