Noun1.half-life- the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate) half life period,period of time,time period- an amount of time; "a time period of 30 years"; "hastened the period...
A cyclotron is required to produce fluorine18, a radioisotope with ahalf-lifeof less than 2 hours (110 min), which makes storage impossible. From theCambridge English Corpus In analogy, the macroproperty ofhalf-lifemay be attributed to uranium. From theCambridge English Corpus On soil thehalf...
half-life 英 [ˈhɑːf laɪf] 美 [ˈhæf laɪf]n. (放射性物质的)半衰期; 半衰期 牛津词典 noun （放射性物质的）半衰期the time taken for the radioactivity of a substance to fall to half its original value半衰期the time taken for...
与half of相比,a half of和one half of强调1/2的意味浓一些。 A half of an hour虽冗长,但语法没问题(A half an hour应该是语误。)。再比如,a quarter of an hour。 在字面上,a half of和one half of更多是以"又半"的形式出现的,如a kil...
英汉 英英 网络释义 half-life n. 1. (放射性物质的)半衰期the time taken for the radioactivity of a substance to fall to half its original value 2. 半衰期the time taken for the concentration of a reactant to fall to half of its original value in a chemical reaction ...
Definition of half-life noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
2、biologicalhalf-life[化] 生物半衰期; 有机体中半排出期; 有机体中放射性同位素的半排出期 [医] 生物半存留期 3、crystallizationhalf-life[化] 结晶半衰期 4、effectivehalf-life[医] 有效半存留期 5、half life of enzyme [化] 酶半衰期 6、half life period [化] 半衰期 ...
half-life 英[ˈhæfˌlaɪf, ˈhɑ:f-] 美[ˈhæfˌlaɪf, ˈhɑf-] 释义 n. 半衰期 大小写变形:Half-Life 词态变化 复数:half-lives; 实用场景例句 全部 The translator who devoted half life on the translation business are just for a penny....
《Half-Life: Alyx》(半衰期:爱莉克斯,以下简称HLA)是由Valve于2020年推出的Half-Life系列最新作品,游戏平台为PCVR独占。作为沉寂13年之久的系列续作,HLA收获了IGN 10/10,Metacritic 93/100,用户评分9.2的优异成绩,位居2020年PC游戏首位。 本作延续了Valve登峰...
During the first half of your life, you probably did not have time to think about how you would spend the rest of your life. You probably rushed through college, fell in love, married, embarked on a career, climbed upward, and acquired a few things to help make the journey comfortable....