PCS 1900
An upbanded and modified version of the pan-European GSM cellular radio standard specified
by the American National Standards Institute (ANSI) as ANSI J-STD-007, 1995 for PCS at 1900 MHz (1.9 GHz). See also cellular radio, GSM, and PCS.
科学参考收录了5291条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。