| 单词 | half-life |
| 释义 | half-life also half life Word forms: half-lives countable noun The half-life of a radioactive substance is the amount of time that it takes to lose half its radioactivity. Collocations: long half-life Lariam is a lipophilic (fat-soluble) molecule and has a long half-life. Times, Sunday Times (2014) (Of all the emotions guilt surely has the longest half-life. THE CALLIGRAPHER (2003) A long half-life of the tyrosyl radical during wintertime anoxia could allow for continued cell division in crucian carp. 2012, 'Studies of ribonucleotide reductase in crucian carp-an oxygen dependent enzyme in an anoxia tolerant vertebrate.', PLoS ONE Technetium-99m has a relatively short half-life of six hours, but other common medical isotopes take weeks or even months to decay. Times, Sunday Times Everything lasts for ever in the digiverse, of course, but, in the nuclear waste vernacular, hate has a relatively short half-life. Times, Sunday Times Clotting factor has a short half-life of eight to 12 hours, which decreases throughout the patient's life. The Scientist First, the short half-life (14.3 days) prevents long-term usage of probes. The Scientist It has a short half-life, 0.5 and 20 ms, in solution and in the gas phase, respectively. Retrieved from Wikipedia CC BY-SA 3.0 |
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