说明：   本文是写给公司新来的程序员的，算是一点培训的教材。本文不会涉及太多的编程细节，只是简单讲解在DELPHI下进行Winsock编程最好了解的知识。
(This article is written for programmers new to the company, regarded as one o' clock training materials. This will not involve too much programming detail, but simply to explain under the Winsock programming in DELPHI the best understanding of the knowledge.)