Definition
The difference between the mass of an atomic nucleus and the sum of the masses of its constituent protons and neutrons.
（物理学）质量亏损
The mass defect plays a crucial role in nuclear reactions, explaining the release of energy.
质量缺陷在核反应中起着至关重要的作用，解释了能量的释放。
Scientists calculate the mass defect by precisely measuring the mass of the nucleus and the masses of its components.
科学家通过精确测量原子核的质量及其组分的质量来计算质量缺陷。
The concept of mass defect is fundamental to understanding nuclear energy and nuclear weapons.
质量缺陷的概念是理解核能和核武器的基础。