论文部分内容阅读
微波,是指频率300MHz～300GHz的电磁波,其方向和大小随时间作周期性变化,人们利用其特性,在各个领域发挥作用并达到目的。
Microwave refers to the electromagnetic wave with the frequency of 300MHz ~ 300GHz. The direction and the size of the microwave periodically change with the passage of time. People use their characteristics to play their roles in various fields and achieve their goals.