说明：  COM是微软公司创建的一种二进制和网络标识，它允许任意两个组件互相通信，而不管它们在什么计算机上运行（只要计算机是互联的），不管各计算机运行的是什么操作系统（只要该操作系统支持COM），也不管该组件是用什么语言编写的
(COM is Microsoft created a binary and network ID, which allows any two components communicate with each other, regardless of what they are running on the computer (as long as the computer is connected), regardless of the computer is running any operating system (as long as The operating system support for COM), and no matter what the component language)