情报资料进行内部交流,由于不经过办理出版、征订、发行等诸种手续,传递迅速,因而大大缩短了读者阅读最新资料的时间差,显示出正式交流所不及的优越性。内部交流的另一个特点是,它是特殊文献搜集的主渠道,不少文献往往只能通过内部交流而获得,如定期或不定期出版物,会议文献、讲学、讲座资料,学位论文,科研报告、调研报告、科研年报、资料汇编、保密文献、科研试验报告、科研经验总结、各种技术说明书、产品样本、目录索引等。以上这些文献资料许多是公开刊物上所难见到的,它 The internal communication of intelligence information has not been through the process of publication, subscription, distribution and other procedures, rapid delivery, which greatly shortened the reader to read the latest data of the time difference, showing the superiority of less than formal exchange. Another characteristic of internal communication is that it is the main channel for collecting special documents. Many documents are often obtained only through internal communication, such as regular or irregular publications, conference documents, lectures, lecture materials, dissertations, research reports , Research reports, scientific research annual reports, compilation of materials, confidential literature, research reports, summary of scientific research, various technical manuals, product samples, catalog index. Many of these documents are hard to find in public publications, it