Antenna is needed to receive and launch electromagnetic wave.
天线是接收、发射电磁波的必备部件。
We use finite difference method to solve electromagnetic wave equation.
采用有限差分方法，对波动方程求数值解。
It was realized at that time that light is a kind of electromagnetic wave.
当时人们认识到了光是一种电磁波。
What kind of changes are now spreading in the case of an electromagnetic wave?
但是现在在电磁波的例子中，传播的是哪一类变化呢？
The model conforms to the real transmission environments of electromagnetic wave better.
所建立的模型更加符合实际的传输环境。
Electromagnetic wave pollution has become the chief physical pollution.
电磁污染已成为首屈一指的物理污染。
Electromagnetic wave pollution has become the chief physical pollution.
电磁污染已成为首屈一指的物理污染。
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