Definition
The difference between the mass of an atomic nucleus and the sum of the masses of its constituent protons and neutrons.
（物理學）質量虧損
The mass defect plays a crucial role in nuclear reactions, explaining the release of energy.
質量缺陷在核反應中起著至關重要的作用，解釋了能量的釋放。
Scientists calculate the mass defect by precisely measuring the mass of the nucleus and the masses of its components.
科學家通過精確測量原子核的質量及其組分的質量來計算質量缺陷。
The concept of mass defect is fundamental to understanding nuclear energy and nuclear weapons.
質量缺陷的概念是理解核能和核武器的基礎。