... EF External Flag 外部标志 EFC Electronic Frequency Control 电子频率控制 EFC Equipment And Facility Console 设备与工具控制台 ...
基于4个网页-相关网页
应用电子技术按设定频率上、下限实现自动转换的双通道积分电路，并按此设计PLC控制的变频调速高楼供水系统。
Variable frequency altering-speed system of supplying water for high building using PLC control was designed by double-channel integral circuit.
通过控制微带漏波天线中部馈电端口移相器，成功实现了工作频率固定下微带漏波天线主波束扫描，并使用电子开关实现微带漏波天线主波束双向扫描。
Through a new feeding construction with phase-shifter, the main lobe of the pattern of the microstrip leaky-wave antenna can scan at a fixed frequency.
应用推荐