halflife

halflife 基本解释

n.半衰期；半衰变周期；[核]半排出期

halflife 用法和例句

1、radioisotope biological halflife

放射性同位素生物半衰期

2、Many of these compounds are recalcitrant and have long halflife periods.

许多这些化合物是顽固和长期半衰期时期。

3、Iodine131 has a halflife of eight days and is quite dangerous to human health.

碘131的半衰期为八天, 对人体健康损害十分巨大。

4、Intramuscular injection is absorbed slow and irregular, serous halflife 7 28 hours.

肌肉注射吸收缓慢而不规则，血浆半衰期728小时。

5、A halflife is the time it takes half the atoms of a radioactive substance to disintegrate.

半衰期是放射性物质一半的原子衰变所需要的时间。

6、Currently, PEGylation is commonly used as an effective method to prolong its halflife in serum.

聚乙二醇修饰是目前有效地延长其半衰期的方法。

7、It is not necessary to wait until half of a sample has decayed in order to measure the halflife.

不必一直等到样品衰变一半之后才测量它的半衰期。