在资源浏览器的右键菜单中添加“计算此文件的CRC32值”菜单项，当选中此菜单时，显示该文件的CRC32值，可用于快速比较2个文件是否相同（如果2个文件相同，其CRC32肯定相同，反之不成立，但概率很小。可用于粗略比较，好处是比直接比较2个文件方便，而且速度快。）-Add in the Explorer s right-click menu "CRC32 value for this file" menu item, when elected in this menu displays CRC32 value of the document can be used to quickly compare two files are identical (if two files are identical, their CRC32 is certainly the same, but not vice versa, but the probability is very small. available for a rough comparison, the benefit is more than easy to directly compare two files, and fast.)