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单词
average life
释义
average life
Encyclopedia
理学
原子核
释
average life; mean life
平均寿命
放射性核素所有原子的平均存活时间。对于按指数规律衰变的体系,平均寿命是放射性核素的原子核数目衰减至起始时刻的1/e所需的时间。用符号τ表示。
Astronomy
average life
平均寿命
Chemistry
>放射化学与辐射化学>基础放射化学>释义
average life; mean life
平均寿命
随便看
expected value vector
expectorant drugs
exped
expedance
expedite
expelling intestinal worms
expelling of French technicians by Central Africa
expelling pathogens from both interior superficies
expelling wind and removing dampness
expendable conductivity temperature depth meter
expendable current profiler
expendable sound velocimeter
expenditure forcast
expenditure measure of GDP
Expenditure Per Capita Tourist
expense
expense in litigation
expenses of road transportation safety
experience
Experience and Nature
experience center
experience course
experience design
Experience in Opera Performance
experience life table
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