证券交易离不开通信曹永秋我国古典神话小说《封神演义》里就有“顺风耳”、“于里眼”奇特功能的故事。Ｌ大这种幻想直到近百多年来，才由电话的发明开始变成现实。电话这八奇怪的发明把我们讲话的声音转变成电信号，经一对电线传输出去，然后又把它转换成声音。这种声音... Securities trading inseparable from the communication Cao Yongqiu China’s classic myth novels, “God of Vengeance” there are “downwind ear”, “in the eye” strange feature story. It was only in the hundred years since the invention of the phone began to become a reality. The Eight Strange Inventions Transform the voice of our speech into an electrical signal, transmit it over a pair of wires, and turn it into sound again. This sound ...