Owing to the fact that the electronic file has its superiorities in efficient storage, retrieval and transmission, it is of great values to transform the traditional paper document to its electronic version.

• 由于电子文档相对于传统的纸张文档来说，具有容易保存、检索、传输的优点，且保密性好，因此，将传统的纸张文档转换成电子文档，具有重要的实际意义。