They state that a moving electric charge will generate a magnetic field while a shifting magnetic field similarly creates an electric field.
它们表明，变化的电荷会产生磁场，变化的磁场同样能够产生电场。
2
PID algorithm is adopted in the system, and the function of non-disturbance shifting from manual mode to automatic mode is realized according to field process requirement.
该系统控制算法采用PID算法，且根据现场工艺要求实现了从手动到自动的无扰切换功能。
3
Now, without shifting your gaze, examine the door in the edge of your field of vision.