摘要: dBm = 10 + 20lg(0.5Vpp) Vpp = 2x10 以上公式均为正弦波,阻抗为50欧的情况下计算得出的 阅读全文
posted @ 2017-11-29 15:07 learndu 阅读(6093) 评论(0) 推荐(0)
摘要: 在python控制台输入import this之后输出如下: The Zen of Python, by Tim PetersBeautiful is better than ugly.Explicit is better than implicit.Simple is better than co 阅读全文
posted @ 2017-11-29 14:31 learndu 阅读(402) 评论(0) 推荐(0)