数字数据网(DDN)

下载PDF

导出

摘要计算机通信技术层出不穷，国民经济的飞速发展，金融、证券、海关、外贸等集团用户和租用数据专线的部门、单位大幅度增加，数据库及其检索业务也迅速发展，现代社会对电信业务的依赖性越来越强。数字数据网DDN（Digital Data Network）就是适合这些业务发展的一种传输网络。

作者郑月宗

机构地区龙游供电局

出处《计算机》 2002年第24期24-24,共1页 Shanghai Computer Weekly

关键词数字数据网 DDN 计算机通信技术传输网络传输速率交叉连接技术时分复用技术互联网业务多媒体通信

参考文献7

1Brooks SA, Leathem AJC. Expression of the CD15 antigen (LewisX) in breast aneer. Histochem J, 1995 t 27 (9) : 689~ 693.
2Konety BR,Bullou B,Jaffe R,et al. Expression of SSEA-1 (LewisX) on transitional cell carcinoma of the bladder. Urol Int, 1997~ 58(2) : 69~ 74.
3Yamaguchi A ,Goi T, Seki K, et a l. Chinical significance of combinedimmunohisto-chemical detection of CD44v6 and sialyl Lex expres-sion for colorectal cancer patients undergoing curative resection. On-cology, 1998 ~ 55 (5) : 400 ~ 403.
4Shiozaki H, Oka H, Inoue M, et al. E-eadherin mediated adhesionsystem in cancer cells. Caneer,1996~77(8)..1605~1613.
5Bornman DM,Mathew S,Alsruhe J,et al. Methylation of the E-cad-herin gene bladder neeplasia and in normal urothelial expressionfrom elderly individuals. Am J Pathol, 2001 ; 159 (3) : 834 ~ 835.
6Naito A, Lease H, Kuzushina T, et al. Clinical significance of E-cad-herin expression in thyroid neoplasms. J Surg Oncol, 2001 ~ 76 (3) :176~180.
7Smith ME,Pignatelli M. The molecular histology of neoplasia:therole of the cadherin/eatenin complex. Histopathology, 1997; 31 (3) :107~111.

计算机

2002年第24期

内容加载中请稍等...