1) RF exchanging instrument
射频交换仪
2) RF exchange matrix
射频交换矩阵
1.
In this paper, we introduce the design of switched beam antenna used in cellular base station of current GSM mobile communication system, discuss the function, purpose, signal relation, design point of all components such as antenna module, Rx/Tx RF module, RF exchange matrix module and high-speed scanning receiver.
提出了在现有GSM移动通信系统中蜂窝基站采用波束转换智能天线的设计方案,对天线系统各组成部分如天线模块、收发射频模块、射频交换矩阵模块、高速扫描接收机等功能、作用、信号关系、设计要点作了探讨。
3) RF spectrum analyzer
射频频谱仪
1.
Combined with the features of virtual instrument, the scheme realizing virtual RF spectrum analyzer is presented and realized in this paper, and digital intermediate frequency method is emphasized.
结合虚拟仪器的特点 ,提出并实现了一种虚拟射频频谱仪的方案 ,着重介绍了其中的中频数字化实现方法。
4) Zhuang Nationality
仪礼交换
1.
Labor Cooperation,Ritual Exchange,and Social Grouping:An Analysis of the Village Community Structure of the Zhuang Nationality in Longji
劳动合作、仪礼交换与社会结群广西龙脊壮族村落的社群结构分析
6) alternate channel
频道交换
补充资料：射频
射频
物理学术语。介于声波和红外线之间的波的频率。用于MR研究的射频常在兆赫兹(MHz)范围内。磁共振成像中，必须使用射频脉冲选择性激励特定层面的质子，以产生MR信号。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条