由于射频信号可能会干扰某些电子医疗装置和导航系统，在医院里和飞机上通常禁止使用移动电话。
Mobile phones are often prohibited in hospitals and on airplanes, as the radiofrequency signals may interfere with certain electro-medical devices and navigation systems.
给出了实验装置，某些实验现象和曲线，并从电子光学角度做了定性分析。
The experimental setup, some experimental phenomena and curves are given and analysed qualitatively from the viewpoint of electronic optical field distribution.
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