Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.
α粒子是从天然放射性蜕变得到的带正电的氦核.
词典精选例句
Rutherford first identified the action of probability in radioactive decay.
卢瑟福首先认识到几率在放射性衰变中的作用.
词典精选例句
It is the product of radioactive decay ( see radioactivity ) and is used in helium dating.
氦 是由放射性衰变形成的,可用于氦年代测定法.
网络文摘精选
Alpha particles positively charged helium nuclei obtained from natural radioactive decay.
粒子是从天然放射性蜕变得到的带正电的氦核.
互联网摘选
Chemistry also uses calculus in determining reaction rates and radioactive decay.
化学也使用演算在确定反应速率和放射性衰变.
互联网摘选
Radon is a gas that comes from the radioactive decay of radium in rocks.
氡是来自岩石中镭辐射衰变而产生的一种气体.
互联网摘选
It had been used for practical ends, to identify elements and to unravel radioactive decay chains.
已将其用于实践的目的, 去鉴别元素和阐明放射性衰变系.
词典精选例句
Each element has at least one isotope with unstable nuclei that can undergo radioactive decay.
每个元素至少有一个同位素不稳定原子核可以进行放射性衰变.
网络文摘精选
