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单词
half-life
释义
half-life
美
英
n.
半衰期；（放射性物质的）半衰期
网络
半条命；战栗时空；半生期
复数：
half-lives
权威英汉双解
英汉
英英
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
n.
1.
半寿期
2.
【原子能】半衰期
n.
1.
the
time
a
radioactive
substance
takes
to
lose
half
its
radioactivity
through
decay
.
2.
the
time
it
takes
for
half
a
given
amount
of
a
substance
such
as
a
drug
to
be
removed
from
living
tissue
through
natural
biological
activity
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更新时间：2025/1/31 7:50:27