双频率 meaning in English

bifrequency

The real - time evaluation and control system of short circuit dual - frequency transfer
短路双频率过渡实时评价控制系统
Dual - frequency motor
双频率电动机
Proper vibration frequency and two amplitudes for different soil and layer depth
适宜的双频率值和双振幅值，适合不同的土壤和铺层厚度。
Two important applications are as band - pass radomes and as sub reflectors for dual frequency reflector antenna system
其最主要的两个应用是作为带通滤波器的天线罩和用作双频率反射天线系统的副反射器。