neutron[5nju:trCn]n.中子neutronneu.tronAHD:[n?“tr?n”, ny?“-] D.J.[6nu87tr%n, 6nju8-]K.K.[6nu7tr$n, 6nju-]n.Abbr. n（名词）缩写 nAn electrically neutral subatomic particle in the baryon family, having a mass 1,839 times that of the electron, stable when bound in an atomic nucleus, and having a mean lifetime of approximately 1.0×103 seconds as a free particle. It and the proton form nearly the entire mass of atomic nuclei. See table at subatomic particle 中子：重子家族中电中性的亚原子粒子，是电子体积的1,839倍，作为自由粒子撞击原子核时保持稳定，平均寿命大约 1.0×103。它和质子几乎构成了整个原子核的质量 参见 subatomic particle
|
