| 单词 |
half-life |
| 分类 |
翻译、意思、用法、释义、英译汉、汉译英、英汉双解词典 |
| 释义 |
Related topics: Physicsˈhalf-life noun [countable] HPthe length of time it takes a radioactive substance to lose half of its radioactivity 〔放射性物质的〕半衰期Examples from the Corpushalf-life• The time it takes for a dose of a drug to wear off is measured by a value called a half-life.• But it has a half-life of just 140 days so there can be little delay manufacture and its incorporation into a bomb.• With a half-life of 12 years, tritium could build up in the Tamar estuary and eventually enter the human food chain.• The more complete descriptive term is drug elimination half-life.• The time taken for half of the atoms of a radioactive isotope to decay is called its half-life.• No one has a long half-life as the star of the program.• These effects are less marked with fentanyl because of its shorter serum half-life.• The daily intake should be divided into at least three doses because of the short half-life.ˈhalf-life nounChineseSyllable Corpus time the to length of substance it lose takes a radioactive |
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