四川邮电职业技术学院教案专用纸 Press, 2004 5. Xu Xiulan. English for Computers and Telecommunications(tl Revision). Beijing: Beijing University of Posts and Telecommunications Press. 2004 Page 2 of 9 Teaching Plan of English for Telecommunications Unit 15四川邮电职业技术学院教案专用纸 Page 2 of 9 Teaching Plan of English for Telecommunications Unit 15 Press,2004 5. Xu Xiulan.English for Computers and Telecommunications (the 3rd Revision) .Beijing: Beijing University of Posts and Telecommunications Press,2004