It is pointed out that the quantum motion of charged particles in uniform magnetic field does not violate the gauge invarianceprinciple.
文章指出在均匀磁场中带电粒子的量子运动不违反规范不变原理。
2
According to the structure invarianceprinciple, a friction compensation controller is designed by choosing load pressure as the observed value.
基于结构不变性原理,以负载压力作为观测量,设计了摩擦力补偿控制器。
3
Based on the invarianceprinciple of differential equations a simple, systematic and rigorous adaptive-feedback controller is proposed to stabilize nonlinearly any chaotic systems.