搜尋結果
half-life
- IPA[ˈhɑːflʌɪf]
英式
- the time taken for the radioactivity of a specified isotope to fall to half its original value;the time required for any specified property (e.g. the concentration of a substance in the body) to decrease by half.
noun: half-life, plural noun: half-lifes
- 釋義
- 相關詞
名詞
- 1. the time taken for the radioactivity of a specified isotope to fall to half its original value iodine-131 has a half-life of 8.1 days
- ▪ the time required for any specified property (e.g. the concentration of a substance in the body) to decrease by half.
- used to allude to the way of life of a different group in society, especially a wealthier one
Oxford American Dictionary
- used to express or allude to the way of life of a different group in society, especially a ...
Oxford Dictionary
- 更多解釋
- IPA[ˈhafˌlīf]
美式
- the time taken for the radioactivity of a specified isotope to fall to half its original value: iodine-131 has a half-life of 8.1 days
Oxford American Dictionary