| 单词 | 介子 |
| 释义 | 〔kaon〕An unstable meson produced either in an electrically charged form with a mass 966 times that of an electron or in a neutral form with a mass 974 times that of an electron as a result of a high-energy particle collision. Also called K-meson See table at subatomic particle K介子：一种不稳定的介子，由于高能粒子碰撞，在带电结构中产生，其质量为一个电子的966倍；或在不带电的结构中产生，其质量为一个电子的974倍 也作 K-meson 参见 subatomic particle〔lepton〕Any of a family of elementary particles that participate in the weak interaction, including the electron, the muon, and their associated neutrinos. See table at subatomic particle 轻子：一种参与微弱互反应的基本粒子家庭的粒子，包括电子、介子以及与他们相关的中子 参见 subatomic particle〔Yukawa〕Japanese physicist. He won a 1949 Nobel Prize for mathematically predicting the existence of the meson.汤川，秀澍：(1907-1981) 日本物理学家，因以数学方法预言介子的存在而获得了1949年的诺贝尔奖〔isospin〕A quantum number related to the number of charge states of a baryon or meson.同位旋：与一个重子或介子的电荷状态数有关的一个量子数〔baryon〕Any of a family of subatomic particles, including the nucleon and hyperon multiplets, that participate in strong interactions, are composed of three quarks, and are generally more massive than mesons. Also called heavy particle See table at subatomic particle 激（发核）子，重子：微原子粒子家族中的一员，包括核子和超子多重谱线，由三夸克组成，一般比介子要重，会发生很强烈的内部反应 也作 heavy particle 参见 subatomic particle〔Powell〕British physicist. He won a 1950 Nobel Prize for discovering methods of photographing atomic nuclei and for his study of mesons.鲍威尔，塞西尔·弗兰克：(1903-1969) 英国物理学家。他因发现了原子核摄影术及对介子的研究而获1750年诺贝尔奖〔muon〕An elementary particle in the lepton family (not a meson), having a mass 209 times that of the electron, a negative electric charge, and a mean lifetime of 2.2 × 10-6 second. Also called mu meson See table at subatomic particle 介子：轻子族中的一种基本微粒（非介子），其质量为电子的209倍，是一种负电荷，平均寿命为2.2×10-6秒 也作 mu meson 参见 subatomic particle〔meson〕Any of a family of subatomic particles that participate in strong interactions, are composed of a quark and an antiquark, and have masses generally intermediate between leptons and baryons. See table at subatomic particle 介子：任一种具有较强相互作用力的亚原子粒子群，由一夸克与一反夸克构成，并具有通常介于轻子和重子间的质量 参见 subatomic particle〔pion〕A semistable meson produced either in a neutral form with a mass 264 times that of an electron and a mean lifetime of 8.4 × 10-17 second or in a positively charged form with a mass 273 times that of an electron and a mean lifetime of 2.6 × 10 -8 second. Also called pi meson See table at subatomic particle π介子：一种半稳定介子，或者以一种质量比电子重264倍的中性形式生成，其平均寿命期为8.4×10-17秒；或者以一种质量比电子重273倍的正电极形式生成，其平均寿命期为2.6×10 -8秒 也作 pi meson 参见 subatomic particle〔boson〕Any of a class of particles, such as the photon, pion, or alpha particle, that have zero or integral spin and obey statistical rules permitting any number of identical particles to occupy the same quantum state.玻色子：具有零或整数自旋状态，并且任意数目的相同粒子占据相同量子状态的统计学规则的粒子，如光子、π介子或α粒子〔tau〕An elementary particle of the lepton family, having a mass about 3,490 times that of the electron, a negative electric charge, and a mean lifetime of 3×10-13 seconds. See table at subatomic particle τ介子：一种轻子族群中的基本粒子，其质量约为电子的3,490倍，带有一个负电荷，平均寿命为3×10-13秒 参见 subatomic particle |
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