And constructed had the function of the SIP User Agent to the video frequencyterminal.
并构建了具有SIP用户代理功能的视频终端。
2
Surface mounted piezoelectric devices for frequency control and selection - Standard Outlines and terminal lead connections - Part 1: plastic moulded enclosure Outlines.
频率控制和选则用表面安装的压电器件。标准外形和终端引线的连接。第1部分：塑料模压外壳外形。
3
Based on equivalent four-terminal networks of the longitudinal ultrasonic transformer, the resonant frequency equation and the amplitude magnification coefficient, with reactive load, are studied.