The mathematical models and their limitative condition of radar electromagnetic wave propagated in interference region, intermediate region and diffraction region are set up respectively.
分别建立雷达电磁波在干涉区、中间区和绕射区传播的数学模型和它们适用的边界条件。
Electromagnetic interference brings about a great deal of harms when various electromagnetic wave resources are widely used in electronic information industry.
丰富的电磁波资源在信息行业得到广泛应用的同时，产生的电磁干扰也会带来许多危害。
Theory analysis and experiments prove that such tri-state power amplifier has a series of advantages such as: little current wave, slight electromagnetic interference, high efficiency and so on.
理论分析和试验表明，该功率放大器具有电流纹波小、电磁干扰小、效率高等优点。
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