Delphi 通过TNMEcho组件测速 测试网络连接的速度，可以测出当前网络传输的速度，通过向指定IP的服务器发送字符串数据后，根据返回时间测出速度快慢-Delphi component by speed TNMEcho network connection speed test can measure the speed of the current network transmission, followed by a string of data sent to the specified IP servers, according to The speed of the return time measured