| 单词 | atomic nucleus |
| 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〔atomic number〕The number of protons in an atomic nucleus.原子序数：原子核中所含的质子数目美国传统〔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〔disintegrate〕They disintegrated the atomic nucleus by bombardment with fast particles.他们用高速粒子轰击原子核来使其发生裂变。外研社新世纪〔fine structure〕Physics The splitting of spectral lines caused by the magnetic moments of orbiting electrons in the atomic nucleus.【物理学】 精细结构：由于在原子核中环绕运行电子产生磁性瞬间而引起的光谱谱线的分裂美国传统〔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〔hyperfine structure〕The splitting of a spectral line into two or more components as a result of the spin or magnetic moment of the atomic nucleus.超精细结构：由于原子核的旋转或磁力矩的结果光谱线分裂成两个或多个组元美国传统〔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〔spallation〕A nuclear reaction in which many particles are ejected from an atomic nucleus by incident particles of sufficiently high energy.裂变：带有充足的高能量的外来粒子将许多粒子从原子核中排斥出的核反应美国传统〔spin〕The total angular momentum of an atomic nucleus.原子核的角动量之总和美国传统Scientists discovered the atomic nucleus in 1909.科学家在1909年发现了原子核。剑桥国际 |
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