半衰期

The half-life of Nembutal is 15 hours in people with a high tolerance to this drug.

对"戊巴比妥"有较高耐受力的人，此药的半衰期为15小时。

The fourth set, the neptunium series, is headed by neptunium-237, which has a half-life of 2 million years.

第四个系是錼系，以錼－237为首，半衰期为200万年。

However, in spite of their performance, they have a negative impact on the marine environment and their long half life in the environment, has prompted marine paint manufacturers to look for a nonpersistent alternative.

虽然它具有防污的功能，但是它对海洋环境有负面影响，且它在环境中有很长的半衰期，这促使船舶油漆生产商寻找其他非持久性的替代物。

The results showed that under routine TPN regime ener- gy=146.6 kJ·kg~(-1/d,nonprotein energy:nitrogen=500 kJ:1gthe body metabolism had following characters:(1)The levels of different half-live plasma protein were constantly lower than normal range during observing period.

在观察期内，机体血浆中不同半衰期的蛋白质均低于正常值。2。

Ideally, urine is collected over a period of 7 to 10 elimination half-lives for complete urinary recovery of the a orbed drug.

较理想的做法是，收集尿液时间长达7~10个消除半衰期，使所吸收的药物全部出现在尿中。

The residues of methyl parathion had not been detected in seven days when it was used.

实验结果表明，甲基对硫磷在小白菜上半衰期为2.91天；喷药后第七天，在小白菜中未检出甲基对硫磷的残留。

Analogues of GLP-1 and Dipeptidy peptidase-Ⅳ inhibitors have a better prospect in the recent study.

其可被二肽基肽酶Ⅳ降解，半衰期极短，限制了其临床应用，目前研究GLP-1类似物及二肽基肽酶Ⅳ抑制剂有更好的应用前景。

The half life of mutant A and B improved by 60% and 166% in comparison with parent PGA.

突变A和B在15%DMF中的半衰期分别比亲本PGA提高60%和166%。

HPLC method of determination of CCU has been developed for the kinetic study. The kinetics of photodecomposition of CCU in various carrier gases have been studied. The photoreaction of CCU in nitrogen and air is of the first order, while in oxygen is closer to that of the second order. The rate constants in nitrogen, air and oxygen are 0.00703/h, 0.0109/hand 0.00445 , and the half-livies are 98. 6, 63. 6 and 62. 7hour respectively.

采用以甲醇一水为流动相的反相HPLC作为分析手段，对灭幼脲在不同载气中的光解动力学作了研究，结果表明，灭幼脲在氮气和空气中的光解反应符合一级动力学形式，而在氧气中的光解则更接近于二级反应形式；在三种气氛中的反应速度常数分别为0.00703h〓，0.00109h〓和0.00445h〓〓，半衰期相应为98.6、63.6及62.7h。

The half life of the uncharged pion is 6??

中性兀介子的半衰期为6×？

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。