在读电磁兼容导论P71页时，发现在“注意“这句话翻译的和原文有疑问：我的理解是单边幅度谱是双边幅度谱的两倍。请大家帮忙看看应如何翻译。

英文原版：Note that all positive frequency components except the dc component in the two-sided magnitude spectrum  are doubled to give the one-sided magnitude spectrum.

翻译如下：