half-life period 英[ˈhæfˌlaɪf ˈpiəriəd] 美[ˈhæfˌlaɪf ˈpɪriəd] 释义 [医] 半衰期(指放射性物质)
The meaning of HALF-LIFE is the time required for half of something to undergo a process. How to use half-life in a sentence.
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...
half-life (haf'līf), The period in which the radioactivity or number of atoms of a radioactive substance decreases by half; similarly applied to any substance, such as a drug in serum, whose quantity decreases exponentially with time. Compare:half-time. ...
网络释义 1. 半衰期 有“半”字的成语_百度知道 ... 半数[ half of;part of;rest of]半衰期[ half-life;half-life period] 半死不活;半死半活[ dying] ... zhidao.baidu.com|基于142个网页 2. 半衷期 光电英语词汇(H) ... half-life 半衷期half-life period半衷期half-linear with 半线宽 ....
Pharmacology. the time required for the activity of a substance taken into the body to lose one half its initial effectiveness. Informal. a brief period during which something flourishes before dying out.Discover More Word History and Origins Origin of half-life1 First recorded in 1905–10; ...
Also calledbi·o·log·i·cal half-life[bahy, uh, -, loj, ik, uh, l , haf, -lahyf].Pharmacology.the time required for the activity of a substance taken into the body to lose onehalfits initial effectiveness. Informal.a brief period during which something flourishes before dying out. ...
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 period【医】 半衰期(指放射性物质) half life periodn. 半衰期 effective half life有效半排出期,有效半衰期 half foam life period【化】 泡沫半衰期 apparent half life表观半衰期 biological half life生物半衰期,生物学半衰期 half life of plasma血浆半衰期 ...
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...