用英文解释调频,调幅的原理答的好的加分哈

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用英文解释调频,调幅的原理答的好的加分哈

用英文解释调频,调幅的原理答的好的加分哈
用英文解释调频,调幅的原理
答的好的加分哈

用英文解释调频,调幅的原理答的好的加分哈
FM(frequency modulation) means using the original signal to control the changes of the carrier's frequrncy,when it comes to AM(amplitude modulation),it makes use of original signal to dominate the varieties of the carrier's amplitude.