half-life
导读：half-life读音音标
英 [ˈhæfˌlaɪf, ˈhɑ:f-]美 [ˈhæfˌlaɪf, ˈhɑf-]
half-life意思解释
n.半衰期； 变形 复数：half-lives 英英释义 half-life[ \'hɑ:flaif ]n.the
英 [ˈhæfˌlaɪf, ˈhɑ:f-]美 [ˈhæfˌlaɪf, ˈhɑf-]
half-life意思解释
n.半衰期； 变形 复数：half-lives 英英释义 half-life[ \'hɑ:flaif ]n.the
half-life读音音标
英 [ˈhæfˌlaɪf, ˈhɑ:f-]
美 [ˈhæfˌlaɪf, ˈhɑf-]
half-life意思解释
n.
半衰期；
变形
复数：half-lives
英英释义
half-life[ \'hɑ:flaif ]
n.
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)
同义词：half life
双语例句
用作名词(n.)The time it takes for half of its original amount to decay is called the half-life.衰变至只剩下原来数目一半所需的时间称为该核素的半衰期。It is not necessary to wait until half of a sample has decayed in order to measure the halflife.不必一直等到样品衰变一半之后才测量它的半衰期。
