| 单词 | 衰变 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔alpha decay〕The radioactive decay of an atomic nucleus by emission of an alpha particle.衰变：放射一个α粒子而导致的原子核的放射性衰变美国传统〔analysis〕Jacobsen based his conclusion on an analysis of the decay of samarium-147 into neodymium-143.雅各布森得出的结论是基于对钐-147衰变成钕-143所作的分析。柯林斯高阶〔beta decay〕The radioactive decay of an atomic nucleus accompanied by emission of a beta particle.β衰变：伴随β粒子释放的原子核放射性衰变美国传统〔beta particle〕A high-speed electron or positron, especially one emitted in radioactive decay.β粒子：一种高速电子或质子，主要在放射衰变中释放出美国传统〔daughter〕Physics The immediate product of the radioactive decay of an element.【物理学】 继承元素：某种元素放射性衰变的直接产物美国传统〔decay〕Physics Radioactive decay.【物理学】 放射性的蜕变、衰变美国传统〔decay〕Physics To disintegrate or diminish by radioactive decay.【物理学】 衰变：由于放射性衰变而解体或缩小美国传统〔disintegrate〕Chemistry Physics To decompose, decay, or undergo a nuclear transformation.【化学】 【物理学】 （核的）蜕变；衰变：分解、衰变或经历原子核的突变美国传统〔emanation〕Chemistry Any of several radioactive gases that are isotopes of radon and are products of radioactive decay.【化学】 射气：几种氡的同位素的放射性气体，是放射性物质衰变的产物美国传统〔gamma decay〕A radioactive process in which an atomic nucleus loses energy by emitting a gamma ray without a change in its atomic or mass numbers.Υ衰变：原子核的一种放射性过程，在这种过程中由于放出一个伽马射线而损失能量，但并不改变原子序数或质量美国传统〔gamma decay〕The decay of an unstable elementary particle by photon emission.通过光子射出的不稳定基本粒子的衰变美国传统〔geochronometry〕Measurement of geologic time, as through isotopic radioactive decay.地质年代测定：通过放射性同位素衰变来测定地质年代美国传统〔half-life〕Physics The time required for half the nuclei in a sample of a specific isotopic species to undergo radioactive decay.【物理学】 半衰期：放射性样品的原子核经历一半放射性衰变所需要的时间美国传统〔nuclear reaction〕A reaction, as in fission, fusion, or radioactive decay, that alters the energy, composition, or structure of an atomic nucleus.核反应：发生在核裂变、聚变或放射性衰变等条件下的改变原子核能量、组成或结构的反应美国传统〔potassium-argon〕Of, relating to, or being a geologic dating method relying on the percentage of potassium in a specimen that has radioactively decayed to argon.钾氩测年：地理学上根据样品中已放射衰变成氩的钾的比例来确定年代的方法的，与这种方法有关的，是这种方法的美国传统〔radiation〕A stream of particles or electromagnetic waves emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay.核衰变产生的微粒或电磁波：放射物的原子或分子由于核衰变放出的一束微粒或电磁波美国传统〔radioactive decay〕Spontaneous disintegration of a radioactive substance accompanied by emission of ionizing radiation in the form of particles and gamma rays.放射性衰变：放射性物质的自发的分裂，伴随有放出微粒或r射线形式的电离辐射美国传统〔rutherford〕A unit expressing the rate of decay of radioactive material, equal to one million disintegrations per second.卢瑟福：反应放射性材料衰变率的单位，等于每秒一百万次衰变美国传统〔unstable〕Decaying with relatively short lifetime. Used of subatomic particles.衰变的：具有相对较短的寿命而衰变，常用于亚原子粒子美国传统 |
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