半衰期

In the case of digg.com's home-page, that half-life is 69 minutes.

就digg.com的主页而言，这个半衰期是69分钟。

It was eliminated slowly, with half-life of about 9～12 hrs.

消除较慢，其消除半衰期为9～12小时左右。

It has a half-life of about 41/2 billion years.

它的半衰期大约为45亿年。

The satisfaction has a short half-life -- it's very fleeting.

满意度有一个非常短的半衰期，是非常短暂的。

For all this, these compound existence's half-life is short.

尽管如此，这些化合物存在的半衰期非常短。

The half-life of enzymatic activity was extended from 0. 07 h to 17. 1 h at 50℃.

通过葡聚糖修饰使得漆酶在pH 3，50℃下的酶活半衰期从0。

The lifetimeand half-life time (t 1/2)of flammulin were 370 days and 256 days, respectively.

根据模型方程计算的火菇素的寿命为370 d，半衰期为256 d。

A very useful quantity is the half-time for the reaction.

一个很有用的量是反应的半衰期。

The plasma concentrations of harmine hydrochloride were measured by reversed phase high performance liquid chromatography.

结果 ：大鼠灌胃盐酸去氢骆驼蓬碱胶囊后血浆药物浓度在 0 2 3h左右达峰(2 95 8g·mL-1)，消除半衰期为 5 33h ，灌胃胶囊剂的生物利用度为 19 6 5 %。

Methods A randomized controlled trail was carried out in 41 patients. The medication design was based on the findings that the half life time of salvianolate was less than 2 h and its time of clearance uas 12 h. The treatment group (n=20) was treated with salvianolate at the dose of 200 mg, intravenous drip, twice a day, and the control group (n=21) with salvianolate at the dose of 200 mg, intravenous drip, once a day. The curative effects of salvianolate on angina pectoris (with syndrome of heart-blood obstruction) in the two groups was compared.

根据丹参酚酸B在体内半衰期小于2h，12h内药物基本从体内消除的研究结果设计给药方案，采用随机对照的方法，试验组（20例）丹参多酚酸盐200mg，静脉滴注，每日2次，对照组（21例）丹参多酚酸盐200mg，每天l次，比较两种给药方法对冠心病心绞痛的疗效差别。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。