uncoupled particle

例句：

1. 1. The uncoupled particle is a fundamental concept in quantum mechanics.
   无耦合粒子是量子力学中的一个基本概念。
2. 2. The uncoupled particle has been the subject of much research in recent years.
   无耦合粒子近年来一直是研究的热点。
3. 3. The uncoupled particle is responsible for the behavior of the system.
   无耦合粒子负责系统的行为。