核转变是发生核反应或核衰变形成新核素的过程，原子核种类发生变化。
... atomic time 原子时 atomic transformation 核转变 atomic trunk 原子中心部分 ...
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... 化成;formation 核转变;nuclear transformation 微生物转化;microbial transformation ...
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高能物理专业英语翻译T-58-SCIdict学术词... ... 无辐射跃迁 transition， non-radiative 核转变 transition， nuclear 一次禁制跃迁 transition， onceforbidden ...
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举例来说，计算表明，钍- 229的原子核内存在着能发出紫外线的转变过程。
Calculations suggest, for instance, that in the nucleus of the isotope thorium-229 is a transition that should emit ultraviolet rays.
同时，加热表面上方还会出现由爆发沸腾向常规核态沸腾的过渡，通过转变时间这一特征参量能够对两种沸腾形态进行划分。
Besides, there is a changeover from explosive boiling state to conventional boiling state on the heating surface, and the transition can be denoted by changeover time.
另外，依据泡核激活机制的转变并结合界面汽化热阱效应对沸腾滞后进行机理分析。
The boiling hysteresis mechanism has been analyzed on the base of the interfacial vaporization heat sink effect and the change in activation way of boiling nuclei.
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