求翻译：本人1999年毕业于中国地质大学，学的是计算机及应用专业，2005年至2009年任职于华为光网络网管开发部，从事T2000传输网管的开发及维护工作，对SDH、DWDM、OTN有一定了解。2010年就职于中兴通讯公司，主要从事GU双模基站管理软件的开发及维护工作，对GSM、UMTS有一定了解。是什么意思？

I graduated in 1999 from China University of Geosciences, is a major in computer science and applications, from 2005 to 2009 served Huawei optical network management development department, T2000 development and maintenance of transmission network management, SDH, DWDM, OTN has a certain understanding. 2010 inaugural from ZTE Corporation, devoted to the GU dual-mode base station management software development and maintenance work, for GSM and UMTS must know.