half-life
基本解释
n. 半衰期, 半排出期
[化] 半衰期; 半寿期
英文释义
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)
词形变化
上一个单词：half-lengths
下一个单词：half-life loan value