nuclear magnetism log

例句：

1. 1.The scientist is studying the properties of nuclear reactors.
   这位科学家正在研究核反应堆的性质。
2. 2.Nuclear power is a clean and efficient source of energy.
   核能是一种清洁且高效的能源来源。
3. 3. The atomic bomb was used to test the principle of nuclear fission.
   原子弹被用来测试核裂变的原理。