neutron death

例句：

1. 1. Neutrons are the particles that make up the nucleus of an atom.
   中子是构成原子核的粒子。
2. 2.The neutron decay process is a fundamental part of nuclear physics.
   中子衰变过程是核物理学的基本部分。
3. 3. Neutrons have a half-life of about 70 years, which means they will only last for half that time before decaying.
   中子的半衰期约为70年，这意味着它们只会在衰减前存在一半的时间。