Unlike helium - 4, it cannot be produced by radioactive decay.

与氦 - 4不同之处是, 氦-3不能由放射性衰变产生.

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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.

辞典例句

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.

辞典例句

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.

辞典例句

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.

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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.

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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.

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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.

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